diff --git a/Makefile b/Makefile
index f02c5d5ef..b2be0d4b2 100644
--- a/Makefile
+++ b/Makefile
@@ -181,7 +181,8 @@ IDO71_C_FILES := \
 	$(shell find src/lib/ultra/audio -name '*.c') \
 	$(shell find src/lib/naudio -name '*.c') \
 	src/lib/lib_2fc60.c \
-	src/lib/lib_39c80.c
+	src/lib/lib_39c80.c \
+	src/lib/lib_3f8a0.c
 
 LOOPUNROLL_O_FILES = $(patsubst src/%.c, $(B_DIR)/%.o, $(LOOPUNROLL_C_FILES))
 MIPS3_O_FILES = $(patsubst src/%.c, $(B_DIR)/%.o, $(MIPS3_C_FILES))
diff --git a/src/include/bss.h b/src/include/bss.h
index 15705a52b..b0b7b56db 100644
--- a/src/include/bss.h
+++ b/src/include/bss.h
@@ -49,7 +49,7 @@ extern u32 var8009c3e0;
 extern struct asistream *g_AsiStream;
 extern u8 *var8009c640;
 extern u8 *var8009c644;
-extern u8 var8009c650[];
+extern u32 var8009c650[34];
 extern u8 *var8009c6d8;
 extern u8 *var8009c6dc;
 extern OSTimer var8009c760;
diff --git a/src/include/lib/lib_3e8c0.h b/src/include/lib/lib_3e8c0.h
index 99b1d785d..b9d72f340 100644
--- a/src/include/lib/lib_3e8c0.h
+++ b/src/include/lib/lib_3e8c0.h
@@ -40,9 +40,9 @@ extern const u32 var70057750[];
 
 u32 func0003f8a0(void);
 void func00040164(struct asistream *stream, u32 arg1, u32 arg2);
-u32 func00040dac(void);
-u32 func00041600(void);
-void func00042238(struct asistream *stream, u32 arg1, u32 arg2);
+void func00040dac(struct asistream *stream, u32 arg1, u32 arg2);
+void func00041600(struct asistream *stream, u32 arg1, u32 arg2);
+bool func00042238(struct asistream *stream, u32 arg1, u32 arg2);
 bool func000427d8(struct asistream *stream, u32 arg1);
 bool func00042990(struct asistream *stream, u32 arg1, u32 arg2);
 bool func00042e38(struct asistream *stream);
diff --git a/src/include/lib/lib_461c0.h b/src/include/lib/lib_461c0.h
index 4bff53b1d..48c7fc3cb 100644
--- a/src/include/lib/lib_461c0.h
+++ b/src/include/lib/lib_461c0.h
@@ -7,7 +7,7 @@
 u32 func000461c0(void);
 u32 func00046290(void);
 s32 func000462c4(void *arg0, void *arg1, s32 arg2);
-u32 func000462f8(void);
-u32 func000464a8(void);
+s32 func000462f8(u8 *arg0, s32 *arg1, s32 arg2, s32 arg3, s32 arg4, s32 arg5, u8 **arg6, u8 **arg7);
+s32 func000464a8(u8 *arg0, s32 *arg1, s32 arg2, s32 arg3, s32 arg4, u8 **arg5, u8 **arg6);
 
 #endif
diff --git a/src/include/types.h b/src/include/types.h
index 2284a7cad..c6bfb29bf 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -7386,14 +7386,23 @@ struct asistream {
 	u32 unk3bec;
 	u32 unk3bf0;
 	u32 unk3bf4;
-	u8 unk3bf8[0xa0];
+	u8 unk3bf8[0x80];
+	u32 unk3c78[2][1];
+	u32 unk3c80[6][1];
 	u32 unk3c98[1][1];
-	u8 unk3c9c[0x2ec];
+	u8 unk3c9c[0x14];
+	u32 unk3cb0[4][1][3];
+	u32 unk3ce0[1][1];
+	u8 unk3ce4[0x1c];
+	u32 unk3d00[1][1];
+	u8 unk3d04[0x284];
 	s32 unk3f88;
 	s32 unk3f8c;
-	u8 unk3f90[0x6cc];
-	s32 unk465c;
-	u32 unk4660;
+	u32 unk3f90;
+	u8 unk3f94[1][0x484];
+	u8 unk4418[1][0x242];
+	s32 unk465c[1];
+	s32 unk4660[1];
 	struct asistream_4f64 unk4664[32];
 	struct asistream_4f64 unk4f64[2][32];
 	u8 unk6164[0x900];
diff --git a/src/lib/lib_3f8a0.c b/src/lib/lib_3f8a0.c
index 0fff4f75b..7fe77cc21 100644
--- a/src/lib/lib_3f8a0.c
+++ b/src/lib/lib_3f8a0.c
@@ -2909,128 +2909,36 @@ const u32 var700577cc[] = {0x00000000};
 const u32 var700577d0[] = {0x64646400};
 const u32 var700577d4[] = {0x00000000};
 
-const u32 var700577d8[] = {0x00000000};
-const u32 var700577dc[] = {0x00000000};
-const u32 var700577e0[] = {0x00000000};
-const u32 var700577e4[] = {0x00000000};
-const u32 var700577e8[] = {0x00000000};
-const u32 var700577ec[] = {0x00000000};
-const u32 var700577f0[] = {0x00000000};
-const u32 var700577f4[] = {0x00000000};
-const u32 var700577f8[] = {0x00000000};
-const u32 var700577fc[] = {0x00000000};
-const u32 var70057800[] = {0x00000000};
-const u32 var70057804[] = {0x00000000};
-const u32 var70057808[] = {0x00000000};
-const u32 var7005780c[] = {0x00000000};
-const u32 var70057810[] = {0x00000000};
-const u32 var70057814[] = {0x00000000};
-const u32 var70057818[] = {0x00000001};
-const u32 var7005781c[] = {0x00000002};
-const u32 var70057820[] = {0x00000003};
-const u32 var70057824[] = {0x00000004};
-const u32 var70057828[] = {0x00000006};
-const u32 var7005782c[] = {0x00000008};
-const u32 var70057830[] = {0x0000000a};
-const u32 var70057834[] = {0x0000000d};
-const u32 var70057838[] = {0x00000004};
-const u32 var7005783c[] = {0x00000005};
-const u32 var70057840[] = {0x00000006};
-const u32 var70057844[] = {0x00000007};
-const u32 var70057848[] = {0x00000008};
-const u32 var7005784c[] = {0x00000009};
-const u32 var70057850[] = {0x0000000b};
-const u32 var70057854[] = {0x0000000d};
-const u32 var70057858[] = {0xffffffff};
-const u32 var7005785c[] = {0xffffffff};
+const s32 var700577d8[34] = {
+	0,  0,  0,  0,  0, 0, 0, 0, 0, 0,
+	0,  0,  0,  0,  0, 0, 1, 2, 3, 4,
+	6,  8,  10, 13, 4, 5, 6, 7, 8, 9,
+	11, 13, -1, -1,
+};
 
-const u32 var70057860[] = {0x0005000b};
-const u32 var70057864[] = {0x00110017};
-const u32 var70057868[] = {0x001d0023};
-const u32 var7005786c[] = {0x002b0035};
-const u32 var70057870[] = {0x0041004f};
-const u32 var70057874[] = {0x005f0073};
-const u32 var70057878[] = {0x008b00a7};
-const u32 var7005787c[] = {0x00c700ed};
-const u32 var70057880[] = {0x011b014f};
-const u32 var70057884[] = {0x018b01cf};
-const u32 var70057888[] = {0x0209023f};
-const u32 var7005788c[] = {0x0005000b};
-const u32 var70057890[] = {0x00110017};
-const u32 var70057894[] = {0x001d0023};
-const u32 var70057898[] = {0x002b0035};
-const u32 var7005789c[] = {0x0041004f};
-const u32 var700578a0[] = {0x005f0071};
-const u32 var700578a4[] = {0x008700a1};
-const u32 var700578a8[] = {0x00c100e7};
-const u32 var700578ac[] = {0x0115014b};
-const u32 var700578b0[] = {0x018901cf};
-const u32 var700578b4[] = {0x021b023f};
-const u32 var700578b8[] = {0x0005000b};
-const u32 var700578bc[] = {0x00110017};
-const u32 var700578c0[] = {0x001d0023};
-const u32 var700578c4[] = {0x002b0035};
-const u32 var700578c8[] = {0x0041004f};
-const u32 var700578cc[] = {0x005f0073};
-const u32 var700578d0[] = {0x008b00a7};
-const u32 var700578d4[] = {0x00c700ed};
-const u32 var700578d8[] = {0x011b014f};
-const u32 var700578dc[] = {0x018b01cf};
-const u32 var700578e0[] = {0x0209023f};
-const u32 var700578e4[] = {0x00030007};
-const u32 var700578e8[] = {0x000b000f};
-const u32 var700578ec[] = {0x00130017};
-const u32 var700578f0[] = {0x001d0023};
-const u32 var700578f4[] = {0x002b0033};
-const u32 var700578f8[] = {0x003d0049};
-const u32 var700578fc[] = {0x0059006d};
-const u32 var70057900[] = {0x008500a1};
-const u32 var70057904[] = {0x00c300ed};
-const u32 var70057908[] = {0x011f0155};
-const u32 var7005790c[] = {0x01a1023f};
-const u32 var70057910[] = {0x00030007};
-const u32 var70057914[] = {0x000b000f};
-const u32 var70057918[] = {0x00130017};
-const u32 var7005791c[] = {0x001d0023};
-const u32 var70057920[] = {0x00290031};
-const u32 var70057924[] = {0x003b0047};
-const u32 var70057928[] = {0x00570069};
-const u32 var7005792c[] = {0x007f009b};
-const u32 var70057930[] = {0x00bd00e5};
-const u32 var70057934[] = {0x01130149};
-const u32 var70057938[] = {0x017f023f};
-const u32 var7005793c[] = {0x00030007};
-const u32 var70057940[] = {0x000b000f};
-const u32 var70057944[] = {0x00130017};
-const u32 var70057948[] = {0x001d0023};
-const u32 var7005794c[] = {0x002b0035};
-const u32 var70057950[] = {0x00410051};
-const u32 var70057954[] = {0x0065007d};
-const u32 var70057958[] = {0x009b00c1};
-const u32 var7005795c[] = {0x00ef0127};
-const u32 var70057960[] = {0x016b01bf};
-const u32 var70057964[] = {0x0225023f};
+const s16 var70057860[2][3][22] = {
+	{
+		{ 5, 11, 17, 23, 29, 35, 43, 53, 65, 79, 95, 115, 139, 167, 199, 237, 283, 335, 395, 463, 521, 575 },
+		{ 5, 11, 17, 23, 29, 35, 43, 53, 65, 79, 95, 113, 135, 161, 193, 231, 277, 331, 393, 463, 539, 575 },
+		{ 5, 11, 17, 23, 29, 35, 43, 53, 65, 79, 95, 115, 139, 167, 199, 237, 283, 335, 395, 463, 521, 575 },
+	}, {
+		{ 3, 7,  11, 15, 19, 23, 29, 35, 43, 51, 61, 73,  89,  109, 133, 161, 195, 237, 287, 341, 417, 575 },
+		{ 3, 7,  11, 15, 19, 23, 29, 35, 41, 49, 59, 71,  87,  105, 127, 155, 189, 229, 275, 329, 383, 575 },
+		{ 3, 7,  11, 15, 19, 23, 29, 35, 43, 53, 65, 81,  101, 125, 155, 193, 239, 295, 363, 447, 549, 575 },
+	},
+};
 
-const u32 var70057968[] = {0x03070b11};
-const u32 var7005796c[] = {0x171f2937};
-const u32 var70057970[] = {0x496383ad};
-const u32 var70057974[] = {0xbf03070b};
-const u32 var70057978[] = {0x1119232f};
-const u32 var7005797c[] = {0x3d4f6787};
-const u32 var70057980[] = {0xb3bf0307};
-const u32 var70057984[] = {0x0b111923};
-const u32 var70057988[] = {0x2f3d4f67};
-const u32 var7005798c[] = {0x85adbf03};
-const u32 var70057990[] = {0x070b0f15};
-const u32 var70057994[] = {0x1d273341};
-const u32 var70057998[] = {0x536987bf};
-const u32 var7005799c[] = {0x03070b0f};
-const u32 var700579a0[] = {0x151b2531};
-const u32 var700579a4[] = {0x3f4f637d};
-const u32 var700579a8[] = {0xbf03070b};
-const u32 var700579ac[] = {0x0f151d29};
-const u32 var700579b0[] = {0x394d6789};
-const u32 var700579b4[] = {0xb3bf0000};
+const u8 var70057968[2][3][13] = {
+	{
+		{ 3, 7, 11, 17, 23, 31, 41, 55, 73, 99,  131, 173, 191 },
+		{ 3, 7, 11, 17, 25, 35, 47, 61, 79, 103, 135, 179, 191 },
+		{ 3, 7, 11, 17, 25, 35, 47, 61, 79, 103, 133, 173, 191 },
+	}, {
+		{ 3, 7, 11, 15, 21, 29, 39, 51, 65, 83,  105, 135, 191 },
+		{ 3, 7, 11, 15, 21, 27, 37, 49, 63, 79,  99,  125, 191 },
+		{ 3, 7, 11, 15, 21, 29, 41, 57, 77, 103, 137, 179, 191 },
+	},
+};
 
 const u32 var700579b8[] = {0x00000006};
 const u32 var700579bc[] = {0x000c0012};
@@ -6624,386 +6532,104 @@ glabel func00041600
 /*    42234:	00000000 */ 	nop
 );
 
-GLOBAL_ASM(
-glabel func00042238
-/*    42238:	27bdff98 */ 	addiu	$sp,$sp,-104
-/*    4223c:	afbf0024 */ 	sw	$ra,0x24($sp)
-/*    42240:	afa40068 */ 	sw	$a0,0x68($sp)
-/*    42244:	afa5006c */ 	sw	$a1,0x6c($sp)
-/*    42248:	afa60070 */ 	sw	$a2,0x70($sp)
-/*    4224c:	8fae0068 */ 	lw	$t6,0x68($sp)
-/*    42250:	8dcf2020 */ 	lw	$t7,0x2020($t6)
-/*    42254:	afaf0064 */ 	sw	$t7,0x64($sp)
-/*    42258:	8fb80068 */ 	lw	$t8,0x68($sp)
-/*    4225c:	8f193ba4 */ 	lw	$t9,0x3ba4($t8)
-/*    42260:	13200007 */ 	beqz	$t9,.L00042280
-/*    42264:	00000000 */ 	nop
-/*    42268:	8fa40068 */ 	lw	$a0,0x68($sp)
-/*    4226c:	8fa5006c */ 	lw	$a1,0x6c($sp)
-/*    42270:	0c01036b */ 	jal	func00040dac
-/*    42274:	8fa60070 */ 	lw	$a2,0x70($sp)
-/*    42278:	10000005 */ 	b	.L00042290
-/*    4227c:	00000000 */ 	nop
-.L00042280:
-/*    42280:	8fa40068 */ 	lw	$a0,0x68($sp)
-/*    42284:	8fa5006c */ 	lw	$a1,0x6c($sp)
-/*    42288:	0c010580 */ 	jal	func00041600
-/*    4228c:	8fa60070 */ 	lw	$a2,0x70($sp)
-.L00042290:
-/*    42290:	8fa9006c */ 	lw	$t1,0x6c($sp)
-/*    42294:	8fa80068 */ 	lw	$t0,0x68($sp)
-/*    42298:	8fac0070 */ 	lw	$t4,0x70($sp)
-/*    4229c:	00095080 */ 	sll	$t2,$t1,0x2
-/*    422a0:	010a5821 */ 	addu	$t3,$t0,$t2
-/*    422a4:	000c6880 */ 	sll	$t5,$t4,0x2
-/*    422a8:	016d7021 */ 	addu	$t6,$t3,$t5
-/*    422ac:	8dcf3c80 */ 	lw	$t7,0x3c80($t6)
-/*    422b0:	000fc040 */ 	sll	$t8,$t7,0x1
-/*    422b4:	afb80060 */ 	sw	$t8,0x60($sp)
-/*    422b8:	8fb90068 */ 	lw	$t9,0x68($sp)
-/*    422bc:	3c0d7005 */ 	lui	$t5,%hi(var70057860)
-/*    422c0:	25ad7860 */ 	addiu	$t5,$t5,%lo(var70057860)
-/*    422c4:	8f2a3bb4 */ 	lw	$t2,0x3bb4($t9)
-/*    422c8:	8f293ba4 */ 	lw	$t1,0x3ba4($t9)
-/*    422cc:	000a6080 */ 	sll	$t4,$t2,0x2
-/*    422d0:	018a6023 */ 	subu	$t4,$t4,$t2
-/*    422d4:	000c6080 */ 	sll	$t4,$t4,0x2
-/*    422d8:	00094140 */ 	sll	$t0,$t1,0x5
-/*    422dc:	018a6023 */ 	subu	$t4,$t4,$t2
-/*    422e0:	01094021 */ 	addu	$t0,$t0,$t1
-/*    422e4:	00084080 */ 	sll	$t0,$t0,0x2
-/*    422e8:	000c6080 */ 	sll	$t4,$t4,0x2
-/*    422ec:	010c5821 */ 	addu	$t3,$t0,$t4
-/*    422f0:	016d7021 */ 	addu	$t6,$t3,$t5
-/*    422f4:	afae0050 */ 	sw	$t6,0x50($sp)
-/*    422f8:	8faf0068 */ 	lw	$t7,0x68($sp)
-/*    422fc:	3c0c7005 */ 	lui	$t4,%hi(var70057968)
-/*    42300:	258c7968 */ 	addiu	$t4,$t4,%lo(var70057968)
-/*    42304:	8df83ba4 */ 	lw	$t8,0x3ba4($t7)
-/*    42308:	8df93bb4 */ 	lw	$t9,0x3bb4($t7)
-/*    4230c:	00184880 */ 	sll	$t1,$t8,0x2
-/*    42310:	00195080 */ 	sll	$t2,$t9,0x2
-/*    42314:	01384821 */ 	addu	$t1,$t1,$t8
-/*    42318:	01595023 */ 	subu	$t2,$t2,$t9
-/*    4231c:	000a5080 */ 	sll	$t2,$t2,0x2
-/*    42320:	000948c0 */ 	sll	$t1,$t1,0x3
-/*    42324:	01384823 */ 	subu	$t1,$t1,$t8
-/*    42328:	01595021 */ 	addu	$t2,$t2,$t9
-/*    4232c:	012a4021 */ 	addu	$t0,$t1,$t2
-/*    42330:	010c5821 */ 	addu	$t3,$t0,$t4
-/*    42334:	afab004c */ 	sw	$t3,0x4c($sp)
-/*    42338:	8fae006c */ 	lw	$t6,0x6c($sp)
-/*    4233c:	8fad0068 */ 	lw	$t5,0x68($sp)
-/*    42340:	8fb90070 */ 	lw	$t9,0x70($sp)
-/*    42344:	000ec080 */ 	sll	$t8,$t6,0x2
-/*    42348:	01b87821 */ 	addu	$t7,$t5,$t8
-/*    4234c:	00194880 */ 	sll	$t1,$t9,0x2
-/*    42350:	01e95021 */ 	addu	$t2,$t7,$t1
-/*    42354:	8d483c98 */ 	lw	$t0,0x3c98($t2)
-/*    42358:	1500003c */ 	bnez	$t0,.L0004244c
-/*    4235c:	00000000 */ 	nop
-/*    42360:	8d4c3ca0 */ 	lw	$t4,0x3ca0($t2)
-/*    42364:	15800039 */ 	bnez	$t4,.L0004244c
-/*    42368:	00000000 */ 	nop
-/*    4236c:	8fae006c */ 	lw	$t6,0x6c($sp)
-/*    42370:	8fab0068 */ 	lw	$t3,0x68($sp)
-/*    42374:	8fb90070 */ 	lw	$t9,0x70($sp)
-/*    42378:	000e6880 */ 	sll	$t5,$t6,0x2
-/*    4237c:	016dc021 */ 	addu	$t8,$t3,$t5
-/*    42380:	00197880 */ 	sll	$t7,$t9,0x2
-/*    42384:	030f4821 */ 	addu	$t1,$t8,$t7
-/*    42388:	8d283ce0 */ 	lw	$t0,0x3ce0($t1)
-/*    4238c:	8fac0050 */ 	lw	$t4,0x50($sp)
-/*    42390:	27b90054 */ 	addiu	$t9,$sp,0x54
-/*    42394:	00085040 */ 	sll	$t2,$t0,0x1
-/*    42398:	018a7021 */ 	addu	$t6,$t4,$t2
-/*    4239c:	85cb0000 */ 	lh	$t3,0x0($t6)
-/*    423a0:	256d0001 */ 	addiu	$t5,$t3,0x1
-/*    423a4:	af2d0000 */ 	sw	$t5,0x0($t9)
-/*    423a8:	27b80054 */ 	addiu	$t8,$sp,0x54
-/*    423ac:	8f0f0000 */ 	lw	$t7,0x0($t8)
-/*    423b0:	8fa90060 */ 	lw	$t1,0x60($sp)
-/*    423b4:	012f082a */ 	slt	$at,$t1,$t7
-/*    423b8:	10200008 */ 	beqz	$at,.L000423dc
-/*    423bc:	00000000 */ 	nop
-/*    423c0:	8fa80060 */ 	lw	$t0,0x60($sp)
-/*    423c4:	27ac0054 */ 	addiu	$t4,$sp,0x54
-/*    423c8:	27aa0054 */ 	addiu	$t2,$sp,0x54
-/*    423cc:	ad880004 */ 	sw	$t0,0x4($t4)
-/*    423d0:	8d4e0004 */ 	lw	$t6,0x4($t2)
-/*    423d4:	1000001b */ 	b	.L00042444
-/*    423d8:	ad4e0000 */ 	sw	$t6,0x0($t2)
-.L000423dc:
-/*    423dc:	8fad006c */ 	lw	$t5,0x6c($sp)
-/*    423e0:	8fab0068 */ 	lw	$t3,0x68($sp)
-/*    423e4:	8faf0070 */ 	lw	$t7,0x70($sp)
-/*    423e8:	000dc880 */ 	sll	$t9,$t5,0x2
-/*    423ec:	0179c021 */ 	addu	$t8,$t3,$t9
-/*    423f0:	000f4880 */ 	sll	$t1,$t7,0x2
-/*    423f4:	03094021 */ 	addu	$t0,$t8,$t1
-/*    423f8:	8d0c3ce8 */ 	lw	$t4,0x3ce8($t0)
-/*    423fc:	8d0e3ce0 */ 	lw	$t6,0x3ce0($t0)
-/*    42400:	8fab0050 */ 	lw	$t3,0x50($sp)
-/*    42404:	27a90054 */ 	addiu	$t1,$sp,0x54
-/*    42408:	018e5021 */ 	addu	$t2,$t4,$t6
-/*    4240c:	000a6840 */ 	sll	$t5,$t2,0x1
-/*    42410:	016dc821 */ 	addu	$t9,$t3,$t5
-/*    42414:	872f0002 */ 	lh	$t7,0x2($t9)
-/*    42418:	25f80001 */ 	addiu	$t8,$t7,0x1
-/*    4241c:	ad380004 */ 	sw	$t8,0x4($t1)
-/*    42420:	27a80054 */ 	addiu	$t0,$sp,0x54
-/*    42424:	8d0c0004 */ 	lw	$t4,0x4($t0)
-/*    42428:	8fae0060 */ 	lw	$t6,0x60($sp)
-/*    4242c:	01cc082a */ 	slt	$at,$t6,$t4
-/*    42430:	10200004 */ 	beqz	$at,.L00042444
-/*    42434:	00000000 */ 	nop
-/*    42438:	8faa0060 */ 	lw	$t2,0x60($sp)
-/*    4243c:	27ab0054 */ 	addiu	$t3,$sp,0x54
-/*    42440:	ad6a0004 */ 	sw	$t2,0x4($t3)
-.L00042444:
-/*    42444:	10000028 */ 	b	.L000424e8
-/*    42448:	00000000 */ 	nop
-.L0004244c:
-/*    4244c:	8fb9006c */ 	lw	$t9,0x6c($sp)
-/*    42450:	8fad0068 */ 	lw	$t5,0x68($sp)
-/*    42454:	8fa90070 */ 	lw	$t1,0x70($sp)
-/*    42458:	00197880 */ 	sll	$t7,$t9,0x2
-/*    4245c:	01afc021 */ 	addu	$t8,$t5,$t7
-/*    42460:	00094080 */ 	sll	$t0,$t1,0x2
-/*    42464:	03086021 */ 	addu	$t4,$t8,$t0
-/*    42468:	8d8e3ca0 */ 	lw	$t6,0x3ca0($t4)
-/*    4246c:	24010002 */ 	addiu	$at,$zero,0x2
-/*    42470:	15c1000c */ 	bne	$t6,$at,.L000424a4
-/*    42474:	00000000 */ 	nop
-/*    42478:	8d8a3ca8 */ 	lw	$t2,0x3ca8($t4)
-/*    4247c:	15400009 */ 	bnez	$t2,.L000424a4
-/*    42480:	00000000 */ 	nop
-/*    42484:	8fab004c */ 	lw	$t3,0x4c($sp)
-/*    42488:	27a90054 */ 	addiu	$t1,$sp,0x54
-/*    4248c:	91790002 */ 	lbu	$t9,0x2($t3)
-/*    42490:	00196880 */ 	sll	$t5,$t9,0x2
-/*    42494:	01b96823 */ 	subu	$t5,$t5,$t9
-/*    42498:	25af0003 */ 	addiu	$t7,$t5,0x3
-/*    4249c:	10000006 */ 	b	.L000424b8
-/*    424a0:	ad2f0000 */ 	sw	$t7,0x0($t1)
-.L000424a4:
-/*    424a4:	8fb80050 */ 	lw	$t8,0x50($sp)
-/*    424a8:	27ac0054 */ 	addiu	$t4,$sp,0x54
-/*    424ac:	8708000e */ 	lh	$t0,0xe($t8)
-/*    424b0:	250e0001 */ 	addiu	$t6,$t0,0x1
-/*    424b4:	ad8e0000 */ 	sw	$t6,0x0($t4)
-.L000424b8:
-/*    424b8:	27aa0054 */ 	addiu	$t2,$sp,0x54
-/*    424bc:	8d4b0000 */ 	lw	$t3,0x0($t2)
-/*    424c0:	8fb90060 */ 	lw	$t9,0x60($sp)
-/*    424c4:	032b082a */ 	slt	$at,$t9,$t3
-/*    424c8:	10200004 */ 	beqz	$at,.L000424dc
-/*    424cc:	00000000 */ 	nop
-/*    424d0:	8fad0060 */ 	lw	$t5,0x60($sp)
-/*    424d4:	27af0054 */ 	addiu	$t7,$sp,0x54
-/*    424d8:	aded0000 */ 	sw	$t5,0x0($t7)
-.L000424dc:
-/*    424dc:	8fa90060 */ 	lw	$t1,0x60($sp)
-/*    424e0:	27b80054 */ 	addiu	$t8,$sp,0x54
-/*    424e4:	af090004 */ 	sw	$t1,0x4($t8)
-.L000424e8:
-/*    424e8:	8fa80060 */ 	lw	$t0,0x60($sp)
-/*    424ec:	27ae0054 */ 	addiu	$t6,$sp,0x54
-/*    424f0:	adc80008 */ 	sw	$t0,0x8($t6)
-/*    424f4:	afa00048 */ 	sw	$zero,0x48($sp)
-/*    424f8:	8faa0070 */ 	lw	$t2,0x70($sp)
-/*    424fc:	8fac0068 */ 	lw	$t4,0x68($sp)
-/*    42500:	000a58c0 */ 	sll	$t3,$t2,0x3
-/*    42504:	016a5821 */ 	addu	$t3,$t3,$t2
-/*    42508:	000b5940 */ 	sll	$t3,$t3,0x5
-/*    4250c:	016a5821 */ 	addu	$t3,$t3,$t2
-/*    42510:	000b5880 */ 	sll	$t3,$t3,0x2
-/*    42514:	018bc821 */ 	addu	$t9,$t4,$t3
-/*    42518:	272d3f94 */ 	addiu	$t5,$t9,0x3f94
-/*    4251c:	afad0044 */ 	sw	$t5,0x44($sp)
-/*    42520:	8fa90070 */ 	lw	$t1,0x70($sp)
-/*    42524:	8faf0068 */ 	lw	$t7,0x68($sp)
-/*    42528:	0009c0c0 */ 	sll	$t8,$t1,0x3
-/*    4252c:	0309c021 */ 	addu	$t8,$t8,$t1
-/*    42530:	0018c140 */ 	sll	$t8,$t8,0x5
-/*    42534:	0309c021 */ 	addu	$t8,$t8,$t1
-/*    42538:	0018c040 */ 	sll	$t8,$t8,0x1
-/*    4253c:	01f84021 */ 	addu	$t0,$t7,$t8
-/*    42540:	250e4418 */ 	addiu	$t6,$t0,0x4418
-/*    42544:	afae0040 */ 	sw	$t6,0x40($sp)
-/*    42548:	afa0003c */ 	sw	$zero,0x3c($sp)
-.L0004254c:
-/*    4254c:	8fac006c */ 	lw	$t4,0x6c($sp)
-/*    42550:	8fad0070 */ 	lw	$t5,0x70($sp)
-/*    42554:	8faa0068 */ 	lw	$t2,0x68($sp)
-/*    42558:	000c5880 */ 	sll	$t3,$t4,0x2
-/*    4255c:	8fb8003c */ 	lw	$t8,0x3c($sp)
-/*    42560:	016c5823 */ 	subu	$t3,$t3,$t4
-/*    42564:	000d4880 */ 	sll	$t1,$t5,0x2
-/*    42568:	000b5880 */ 	sll	$t3,$t3,0x2
-/*    4256c:	012d4823 */ 	subu	$t1,$t1,$t5
-/*    42570:	00094880 */ 	sll	$t1,$t1,0x2
-/*    42574:	014bc821 */ 	addu	$t9,$t2,$t3
-/*    42578:	03297821 */ 	addu	$t7,$t9,$t1
-/*    4257c:	00184080 */ 	sll	$t0,$t8,0x2
-/*    42580:	01e87021 */ 	addu	$t6,$t7,$t0
-/*    42584:	8dcc3cb0 */ 	lw	$t4,0x3cb0($t6)
-/*    42588:	afac0038 */ 	sw	$t4,0x38($sp)
-/*    4258c:	8faa0038 */ 	lw	$t2,0x38($sp)
-/*    42590:	3c0d7005 */ 	lui	$t5,%hi(var700577d8)
-/*    42594:	000a5880 */ 	sll	$t3,$t2,0x2
-/*    42598:	01ab6821 */ 	addu	$t5,$t5,$t3
-/*    4259c:	8dad77d8 */ 	lw	$t5,%lo(var700577d8)($t5)
-/*    425a0:	afad0034 */ 	sw	$t5,0x34($sp)
-/*    425a4:	8fb9003c */ 	lw	$t9,0x3c($sp)
-/*    425a8:	00194880 */ 	sll	$t1,$t9,0x2
-/*    425ac:	03a9c021 */ 	addu	$t8,$sp,$t1
-/*    425b0:	8f180054 */ 	lw	$t8,0x54($t8)
-/*    425b4:	afb80030 */ 	sw	$t8,0x30($sp)
-/*    425b8:	8faf0038 */ 	lw	$t7,0x38($sp)
-/*    425bc:	3c0e800a */ 	lui	$t6,%hi(var8009c650)
-/*    425c0:	000f4080 */ 	sll	$t0,$t7,0x2
-/*    425c4:	01c87021 */ 	addu	$t6,$t6,$t0
-/*    425c8:	8dcec650 */ 	lw	$t6,%lo(var8009c650)($t6)
-/*    425cc:	15c00015 */ 	bnez	$t6,.L00042624
-/*    425d0:	00000000 */ 	nop
-/*    425d4:	8fac0030 */ 	lw	$t4,0x30($sp)
-/*    425d8:	8faa0048 */ 	lw	$t2,0x48($sp)
-/*    425dc:	018a5823 */ 	subu	$t3,$t4,$t2
-/*    425e0:	afab002c */ 	sw	$t3,0x2c($sp)
-/*    425e4:	8fa5002c */ 	lw	$a1,0x2c($sp)
-/*    425e8:	8fa40044 */ 	lw	$a0,0x44($sp)
-/*    425ec:	0c012c30 */ 	jal	bzero
-/*    425f0:	00052840 */ 	sll	$a1,$a1,0x1
-/*    425f4:	8fb9002c */ 	lw	$t9,0x2c($sp)
-/*    425f8:	8fad0044 */ 	lw	$t5,0x44($sp)
-/*    425fc:	00194840 */ 	sll	$t1,$t9,0x1
-/*    42600:	01a9c021 */ 	addu	$t8,$t5,$t1
-/*    42604:	afb80044 */ 	sw	$t8,0x44($sp)
-/*    42608:	8faf0040 */ 	lw	$t7,0x40($sp)
-/*    4260c:	8fa8002c */ 	lw	$t0,0x2c($sp)
-/*    42610:	01e87021 */ 	addu	$t6,$t7,$t0
-/*    42614:	afae0040 */ 	sw	$t6,0x40($sp)
-/*    42618:	8fac0030 */ 	lw	$t4,0x30($sp)
-/*    4261c:	10000010 */ 	b	.L00042660
-/*    42620:	afac0048 */ 	sw	$t4,0x48($sp)
-.L00042624:
-/*    42624:	8faa0068 */ 	lw	$t2,0x68($sp)
-/*    42628:	8fab0034 */ 	lw	$t3,0x34($sp)
-/*    4262c:	8fb90030 */ 	lw	$t9,0x30($sp)
-/*    42630:	27ad0044 */ 	addiu	$t5,$sp,0x44
-/*    42634:	27a90040 */ 	addiu	$t1,$sp,0x40
-/*    42638:	afa9001c */ 	sw	$t1,0x1c($sp)
-/*    4263c:	afad0018 */ 	sw	$t5,0x18($sp)
-/*    42640:	8fa60038 */ 	lw	$a2,0x38($sp)
-/*    42644:	8fa70048 */ 	lw	$a3,0x48($sp)
-/*    42648:	2544001c */ 	addiu	$a0,$t2,0x1c
-/*    4264c:	25452020 */ 	addiu	$a1,$t2,0x2020
-/*    42650:	afab0010 */ 	sw	$t3,0x10($sp)
-/*    42654:	0c0118be */ 	jal	func000462f8
-/*    42658:	afb90014 */ 	sw	$t9,0x14($sp)
-/*    4265c:	afa20048 */ 	sw	$v0,0x48($sp)
-.L00042660:
-/*    42660:	8fb8003c */ 	lw	$t8,0x3c($sp)
-/*    42664:	270f0001 */ 	addiu	$t7,$t8,0x1
-/*    42668:	29e10003 */ 	slti	$at,$t7,0x3
-/*    4266c:	1420ffb7 */ 	bnez	$at,.L0004254c
-/*    42670:	afaf003c */ 	sw	$t7,0x3c($sp)
-/*    42674:	8fae006c */ 	lw	$t6,0x6c($sp)
-/*    42678:	8fa80068 */ 	lw	$t0,0x68($sp)
-/*    4267c:	8fab0070 */ 	lw	$t3,0x70($sp)
-/*    42680:	000e6080 */ 	sll	$t4,$t6,0x2
-/*    42684:	010c5021 */ 	addu	$t2,$t0,$t4
-/*    42688:	000bc880 */ 	sll	$t9,$t3,0x2
-/*    4268c:	01596821 */ 	addu	$t5,$t2,$t9
-/*    42690:	8da93d00 */ 	lw	$t1,0x3d00($t5)
-/*    42694:	25380020 */ 	addiu	$t8,$t1,0x20
-/*    42698:	afb80038 */ 	sw	$t8,0x38($sp)
-/*    4269c:	8fae006c */ 	lw	$t6,0x6c($sp)
-/*    426a0:	8faf0068 */ 	lw	$t7,0x68($sp)
-/*    426a4:	8fab0070 */ 	lw	$t3,0x70($sp)
-/*    426a8:	000e4080 */ 	sll	$t0,$t6,0x2
-/*    426ac:	01e86021 */ 	addu	$t4,$t7,$t0
-/*    426b0:	000b5080 */ 	sll	$t2,$t3,0x2
-/*    426b4:	018ac821 */ 	addu	$t9,$t4,$t2
-/*    426b8:	8f2d3c78 */ 	lw	$t5,0x3c78($t9)
-/*    426bc:	8fa90064 */ 	lw	$t1,0x64($sp)
-/*    426c0:	01a9c021 */ 	addu	$t8,$t5,$t1
-/*    426c4:	afb80028 */ 	sw	$t8,0x28($sp)
-/*    426c8:	8fae0068 */ 	lw	$t6,0x68($sp)
-/*    426cc:	8faf0028 */ 	lw	$t7,0x28($sp)
-/*    426d0:	27a80044 */ 	addiu	$t0,$sp,0x44
-/*    426d4:	27ab0040 */ 	addiu	$t3,$sp,0x40
-/*    426d8:	afab0018 */ 	sw	$t3,0x18($sp)
-/*    426dc:	afa80014 */ 	sw	$t0,0x14($sp)
-/*    426e0:	8fa60038 */ 	lw	$a2,0x38($sp)
-/*    426e4:	8fa70048 */ 	lw	$a3,0x48($sp)
-/*    426e8:	25c4001c */ 	addiu	$a0,$t6,0x1c
-/*    426ec:	25c52020 */ 	addiu	$a1,$t6,0x2020
-/*    426f0:	0c01192a */ 	jal	func000464a8
-/*    426f4:	afaf0010 */ 	sw	$t7,0x10($sp)
-/*    426f8:	afa20048 */ 	sw	$v0,0x48($sp)
-/*    426fc:	8fac0028 */ 	lw	$t4,0x28($sp)
-/*    42700:	8faa0068 */ 	lw	$t2,0x68($sp)
-/*    42704:	ad4c2020 */ 	sw	$t4,0x2020($t2)
-/*    42708:	8fb90048 */ 	lw	$t9,0x48($sp)
-/*    4270c:	2b210241 */ 	slti	$at,$t9,0x241
-/*    42710:	14200008 */ 	bnez	$at,.L00042734
-/*    42714:	00000000 */ 	nop
-/*    42718:	8fb80070 */ 	lw	$t8,0x70($sp)
-/*    4271c:	8fa90068 */ 	lw	$t1,0x68($sp)
-/*    42720:	240d0240 */ 	addiu	$t5,$zero,0x240
-/*    42724:	00187080 */ 	sll	$t6,$t8,0x2
-/*    42728:	012e7821 */ 	addu	$t7,$t1,$t6
-/*    4272c:	10000007 */ 	b	.L0004274c
-/*    42730:	aded465c */ 	sw	$t5,0x465c($t7)
-.L00042734:
-/*    42734:	8fac0070 */ 	lw	$t4,0x70($sp)
-/*    42738:	8fab0068 */ 	lw	$t3,0x68($sp)
-/*    4273c:	8fa80048 */ 	lw	$t0,0x48($sp)
-/*    42740:	000c5080 */ 	sll	$t2,$t4,0x2
-/*    42744:	016ac821 */ 	addu	$t9,$t3,$t2
-/*    42748:	af28465c */ 	sw	$t0,0x465c($t9)
-.L0004274c:
-/*    4274c:	8fb80048 */ 	lw	$t8,0x48($sp)
-/*    42750:	2b010240 */ 	slti	$at,$t8,0x240
-/*    42754:	10200013 */ 	beqz	$at,.L000427a4
-/*    42758:	00000000 */ 	nop
-/*    4275c:	8fac0070 */ 	lw	$t4,0x70($sp)
-/*    42760:	8fa90048 */ 	lw	$t1,0x48($sp)
-/*    42764:	8faf0068 */ 	lw	$t7,0x68($sp)
-/*    42768:	240e0240 */ 	addiu	$t6,$zero,0x240
-/*    4276c:	000c5880 */ 	sll	$t3,$t4,0x2
-/*    42770:	01c96823 */ 	subu	$t5,$t6,$t1
-/*    42774:	01eb5021 */ 	addu	$t2,$t7,$t3
-/*    42778:	ad4d4660 */ 	sw	$t5,0x4660($t2)
-/*    4277c:	8fb90070 */ 	lw	$t9,0x70($sp)
-/*    42780:	8fa80068 */ 	lw	$t0,0x68($sp)
-/*    42784:	8fa40044 */ 	lw	$a0,0x44($sp)
-/*    42788:	0019c080 */ 	sll	$t8,$t9,0x2
-/*    4278c:	01187021 */ 	addu	$t6,$t0,$t8
-/*    42790:	8dc54660 */ 	lw	$a1,0x4660($t6)
-/*    42794:	0c012c30 */ 	jal	bzero
-/*    42798:	00052840 */ 	sll	$a1,$a1,0x1
-/*    4279c:	10000006 */ 	b	.L000427b8
-/*    427a0:	00000000 */ 	nop
-.L000427a4:
-/*    427a4:	8fac0070 */ 	lw	$t4,0x70($sp)
-/*    427a8:	8fa90068 */ 	lw	$t1,0x68($sp)
-/*    427ac:	000c7880 */ 	sll	$t7,$t4,0x2
-/*    427b0:	012f5821 */ 	addu	$t3,$t1,$t7
-/*    427b4:	ad604660 */ 	sw	$zero,0x4660($t3)
-.L000427b8:
-/*    427b8:	10000003 */ 	b	.L000427c8
-/*    427bc:	24020001 */ 	addiu	$v0,$zero,0x1
-/*    427c0:	10000001 */ 	b	.L000427c8
-/*    427c4:	00000000 */ 	nop
-.L000427c8:
-/*    427c8:	8fbf0024 */ 	lw	$ra,0x24($sp)
-/*    427cc:	27bd0068 */ 	addiu	$sp,$sp,0x68
-/*    427d0:	03e00008 */ 	jr	$ra
-/*    427d4:	00000000 */ 	nop
-);
+extern u32 var8009c650[34];
+
+bool func00042238(struct asistream *stream, u32 arg1, u32 arg2)
+{
+	s32 sp64 = stream->unk2020;
+	s32 sp60;
+	s32 sp54[3];
+	const s16 *sp50;
+	const u8 *sp4c;
+	s32 sp48;
+	u8 *sp44;
+	u8 *sp40;
+	s32 i;
+	u32 sp38;
+	s32 sp34;
+	s32 sp30;
+	s32 sp2c;
+	s32 sp28;
+
+	if (stream->unk3ba4) {
+		func00040dac(stream, arg1, arg2);
+	} else {
+		func00041600(stream, arg1, arg2);
+	}
+
+	sp60 = stream->unk3c80[arg1][arg2] * 2;
+	sp50 = var70057860[stream->unk3ba4][stream->unk3bb4];
+	sp4c = var70057968[stream->unk3ba4][stream->unk3bb4];
+
+	if (stream->unk3c98[arg1][arg2] == 0 && stream->unk3c98[arg1][arg2 + 2] == 0) {
+		sp54[0] = sp50[stream->unk3ce0[arg1][arg2]] + 1;
+
+		if (sp54[0] > sp60) {
+			sp54[0] = sp54[1] = sp60;
+		} else {
+			sp54[1] = sp50[stream->unk3ce0[arg1][arg2] + stream->unk3ce0[arg1][arg2 + 2] + 1] + 1;
+
+			if (sp54[1] > sp60) {
+				sp54[1] = sp60;
+			}
+		}
+	} else {
+		if (stream->unk3c98[arg1][arg2 + 2] == 2 && stream->unk3c98[arg1][arg2 + 4] == 0) {
+			sp54[0] = sp4c[2] * 3 + 3;
+		} else {
+			sp54[0] = sp50[7] + 1;
+		}
+
+		if (sp54[0] > sp60) {
+			sp54[0] = sp60;
+		}
+
+		sp54[1] = sp60;
+	}
+
+	sp54[2] = sp60;
+	sp48 = 0;
+	sp44 = stream->unk3f94[arg2];
+	sp40 = stream->unk4418[arg2];
+
+	for (i = 0; i < 3; i++) {
+		sp38 = stream->unk3cb0[arg1][arg2][i];
+		sp34 = var700577d8[sp38];
+		sp30 = sp54[i];
+
+		if (var8009c650[sp38] == 0) {
+			sp2c = sp30 - sp48;
+
+			bzero(sp44, sp2c * 2);
+
+			sp44 += sp2c * 2;
+			sp40 += sp2c;
+			sp48 = sp30;
+		} else {
+			sp48 = func000462f8(stream->unk1c, &stream->unk2020, sp38, sp48, sp34, sp30, &sp44, &sp40);
+		}
+	}
+
+	sp38 = stream->unk3d00[arg1][arg2] + 32;
+	sp28 = stream->unk3c78[arg1][arg2] + sp64;
+	sp48 = func000464a8(stream->unk1c, &stream->unk2020, sp38, sp48, sp28, &sp44, &sp40);
+	stream->unk2020 = sp28;
+
+	if (sp48 > 576) {
+		stream->unk465c[arg2] = 576;
+	} else {
+		stream->unk465c[arg2] = sp48;
+	}
+
+	if (sp48 < 576) {
+		stream->unk4660[arg2] = 576 - sp48;
+		bzero(sp44, stream->unk4660[arg2] * 2);
+	} else {
+		stream->unk4660[arg2] = 0;
+	}
+
+	return true;
+}
 
 bool func000427d8(struct asistream *stream, u32 arg1)
 {
@@ -7740,7 +7366,7 @@ bool func0004371c(struct asistream *stream)
 	if (stream->unk3c98[sp950][0] != 0 && stream->unk3c98[sp950][2] == 2) {
 		sp948 = 32;
 	} else {
-		sp944 = (stream->unk465c - 1) / 18 + 1;
+		sp944 = (stream->unk465c[0] - 1) / 18 + 1;
 		sp948 = sp944;
 	}
 
diff --git a/src/lib/lib_43dd0.c b/src/lib/lib_43dd0.c
index 6c753078c..dd7391e0a 100644
--- a/src/lib/lib_43dd0.c
+++ b/src/lib/lib_43dd0.c
@@ -9,7 +9,7 @@
 
 extern struct mp3vars g_Mp3Vars;
 
-u8 var8009c650[0x88];
+u32 var8009c650[34];
 u8 *var8009c6d8;
 u8 *var8009c6dc;