diff --git a/include/JSystem/JAudio/JASDvdThread.h b/include/JSystem/JAudio/JASDvdThread.h
index c48738d33..52accbde9 100644
--- a/include/JSystem/JAudio/JASDvdThread.h
+++ b/include/JSystem/JAudio/JASDvdThread.h
@@ -19,7 +19,7 @@ public:
         OSInitThreadQueue(&field_0x68);
     }
     ~JASTaskThread();
-    bool sendCmdMsg(s32 (*)(void*), void*, u32);
+    BOOL sendCmdMsg(s32 (*)(void*), void*, u32);
     void* run();
     void pause(bool);
 
@@ -31,7 +31,7 @@ namespace JASystem {
     namespace Dvd {
         bool createThread(int, int, u32);
         void resumeThread();
-        void sendCmdMsg(s32 (*)(void*), void*, u32);
+        BOOL sendCmdMsg(s32 (*)(void*), void*, u32);
         int checkPassDvdT(u32, u32*, void (*)(u32));
         u32 checkFile(char*);
         void unpauseDvdT();
diff --git a/include/JSystem/JAudio/JASHeapCtrl.h b/include/JSystem/JAudio/JASHeapCtrl.h
index 27f9fc805..f800f16be 100644
--- a/include/JSystem/JAudio/JASHeapCtrl.h
+++ b/include/JSystem/JAudio/JASHeapCtrl.h
@@ -19,6 +19,7 @@ namespace JASystem {
             };
 
             THeap(TDisposer*);
+            ~THeap() {}
             void initRootHeap(void*, u32, Type);
             bool alloc(THeap*, u32);
             bool free();
@@ -42,9 +43,9 @@ namespace JASystem {
         public:
             TSolidHeap();
             ~TSolidHeap() {}
-            int alloc(long param_1);
+            void* alloc(s32 param_1);
             void freeAll();
-            void init(u8* param_1, long param_2);
+            void init(u8* param_1, s32 param_2);
             int getRemain();
 
             /* 0x00 */ u32 field_0x0;
diff --git a/include/JSystem/JAudio/JASSystemHeap.h b/include/JSystem/JAudio/JASSystemHeap.h
index e42bfc34a..477312828 100644
--- a/include/JSystem/JAudio/JASSystemHeap.h
+++ b/include/JSystem/JAudio/JASSystemHeap.h
@@ -14,7 +14,7 @@ namespace JASystem {
         void sysDramSetup(JKRSolidHeap*);
         void* allocFromSysDram(u32);
         void sysAramSetup(u32);
-        void allocFromSysAramFull(u32*);
+        void* allocFromSysAramFull(u32*);
 
         extern TSolidHeap audioAramHeap;
         extern u32 audioDramSize;
diff --git a/include/JSystem/JAudio/JASWaveArcLoader.h b/include/JSystem/JAudio/JASWaveArcLoader.h
new file mode 100644
index 000000000..d8ae96492
--- /dev/null
+++ b/include/JSystem/JAudio/JASWaveArcLoader.h
@@ -0,0 +1,43 @@
+#ifndef JASWAVEARCLOADER_H
+#define JASWAVEARCLOADER_H
+
+#include "JSystem/JAudio/JASHeapCtrl.h"
+#include "dolphin/os/OSMutex.h"
+
+namespace JASystem {
+    namespace WaveArcLoader {
+        bool init();
+        Kernel::THeap* getRootHeap();
+        void setCurrentDir(const char*);
+        char* getCurrentDir();
+
+        extern Kernel::THeap sAramHeap;
+        extern char sCurrentDir[];
+    };
+
+    class TWaveArc : public Kernel::TDisposer {
+    public:
+        TWaveArc();
+        virtual void onLoadDone() {}
+        virtual void onEraseDone() {}
+        bool loadSetup(u32);
+        bool eraseSetup();
+        static s32 loadToAramCallback(void*);
+        bool sendLoadCmd();
+        void load(Kernel::THeap*);
+        bool erase();
+        void onDispose();
+        void setEntryNum(s32);
+        void setFileName(const char*);
+
+        /* 0x04 */ Kernel::THeap field_0x4;
+        /* 0x4C */ int field_0x4c;
+        /* 0x50 */ OSMutex mMutex;
+        /* 0x68 */ int field_0x68;
+        /* 0x6C */ int field_0x6c;
+        /* 0x70 */ int field_0x70;
+        /* 0x74 */ int field_0x74;
+    };
+}
+
+#endif /* JASWAVEARCLOADER_H */
diff --git a/include/JSystem/JKernel/JKRThread.h b/include/JSystem/JKernel/JKRThread.h
index ca4e85678..d293a4d96 100644
--- a/include/JSystem/JKernel/JKRThread.h
+++ b/include/JSystem/JKernel/JKRThread.h
@@ -31,11 +31,11 @@ public:
 
 protected:
     void resume() { OSResumeThread(mThreadRecord); }
-    void sendMessage(OSMessage message) {
-        OSSendMessage(&mMessageQueue, message, OS_MESSAGE_NOBLOCK);
+    BOOL sendMessage(OSMessage message) {
+        return OSSendMessage(&mMessageQueue, message, OS_MESSAGE_NOBLOCK);
     }
-    void sendMessageBlock(OSMessage message) {
-        OSSendMessage(&mMessageQueue, message, OS_MESSAGE_BLOCK);
+    BOOL sendMessageBlock(OSMessage message) {
+        return OSSendMessage(&mMessageQueue, message, OS_MESSAGE_BLOCK);
     }
     OSMessage waitMessage() {
         OSMessage message;
diff --git a/src/JSystem/JAudio/JASDvdThread.cpp b/src/JSystem/JAudio/JASDvdThread.cpp
index ceffbc437..134059ca6 100644
--- a/src/JSystem/JAudio/JASDvdThread.cpp
+++ b/src/JSystem/JAudio/JASDvdThread.cpp
@@ -22,14 +22,14 @@ JASTaskThread::TCallStack::~TCallStack() {
 }
 
 /* 8027B5D8-8027B66C       .text sendCmdMsg__13JASTaskThreadFPFPv_lPvUl */
-bool JASTaskThread::sendCmdMsg(s32 (*param_1)(void*), void* param_2, u32 param_3) {
+BOOL JASTaskThread::sendCmdMsg(s32 (*param_1)(void*), void* param_2, u32 param_3) {
     TCallStack* stack = new(JKRGetSystemHeap(), -4) TCallStack(param_3);
     if (!stack) {
         return false;
     }
     JASystem::Calc::bcopy(param_2, stack->argspace, param_3);
     stack->field_0x0 = param_1;
-    sendMessageBlock(stack);
+    return sendMessageBlock(stack);
 }
 
 /* 8027B66C-8027B6D4       .text run__13JASTaskThreadFv */
@@ -79,9 +79,9 @@ void JASystem::Dvd::resumeThread() {
 }
 
 /* 8027B84C-8027B8D4       .text sendCmdMsg__Q28JASystem3DvdFPFPv_lPvUl */
-void JASystem::Dvd::sendCmdMsg(s32 (*param_1)(void*), void* param_2, u32 param_3) {
+BOOL JASystem::Dvd::sendCmdMsg(s32 (*param_1)(void*), void* param_2, u32 param_3) {
     JUT_ASSERT(152, sThread);
-    sThread->sendCmdMsg(param_1, param_2, param_3);
+    return sThread->sendCmdMsg(param_1, param_2, param_3);
 }
 
 /* 8027B8D4-8027B914       .text checkPassDvdT__Q28JASystem3DvdFUlPUlPFUl_v */
diff --git a/src/JSystem/JAudio/JASHeapCtrl.cpp b/src/JSystem/JAudio/JASHeapCtrl.cpp
index 0682a2ad9..9d69be89c 100644
--- a/src/JSystem/JAudio/JASHeapCtrl.cpp
+++ b/src/JSystem/JAudio/JASHeapCtrl.cpp
@@ -197,7 +197,7 @@ JASystem::Kernel::TSolidHeap::TSolidHeap() {
 }
 
 /* 8027D370-8027D40C       .text alloc__Q38JASystem6Kernel10TSolidHeapFl */
-int JASystem::Kernel::TSolidHeap::alloc(s32 size) {
+void* JASystem::Kernel::TSolidHeap::alloc(s32 size) {
     /* Nonmatching */
     u32 tmp1 = OSRoundUp32B(size);
     if (field_0x0 == 0) {
@@ -213,7 +213,7 @@ int JASystem::Kernel::TSolidHeap::alloc(s32 size) {
     }
     field_0xc++;
     field_0x10 = tmp2;
-    return tmp2;
+    return (void*)tmp2;
 }
 
 /* 8027D40C-8027D424       .text freeAll__Q38JASystem6Kernel10TSolidHeapFv */
diff --git a/src/JSystem/JAudio/JASSystemHeap.cpp b/src/JSystem/JAudio/JASSystemHeap.cpp
index 6f6daf828..27f535573 100644
--- a/src/JSystem/JAudio/JASSystemHeap.cpp
+++ b/src/JSystem/JAudio/JASSystemHeap.cpp
@@ -52,8 +52,9 @@ void JASystem::Kernel::sysAramSetup(u32 param_1) {
 }
 
 /* 8027DC84-8027DCDC       .text allocFromSysAramFull__Q28JASystem6KernelFPUl */
-void JASystem::Kernel::allocFromSysAramFull(u32* param_1) {
+void* JASystem::Kernel::allocFromSysAramFull(u32* param_1) {
     u32 size = audioAramHeap.getRemain();
-    audioAramHeap.alloc(size - 0x20);
+    void* var1 = audioAramHeap.alloc(size - 0x20);
     *param_1 = size - 0x20;
+    return var1;
 }
diff --git a/src/JSystem/JAudio/JASWaveArcLoader.cpp b/src/JSystem/JAudio/JASWaveArcLoader.cpp
index 262e4b564..c451154f2 100644
--- a/src/JSystem/JAudio/JASWaveArcLoader.cpp
+++ b/src/JSystem/JAudio/JASWaveArcLoader.cpp
@@ -3,81 +3,174 @@
 // Translation Unit: JASWaveArcLoader.cpp
 //
 
-#include "JASWaveArcLoader.h"
-#include "dolphin/types.h"
+#include "JSystem/JAudio/JASWaveArcLoader.h"
+#include "JSystem/JAudio/JASDvdThread.h"
+#include "JSystem/JAudio/JASSystemHeap.h"
+#include "JSystem/JKernel/JKRDvdAramRipper.h"
+#include "JSystem/JUtility/JUTAssert.h"
+#include "MSL_C/string.h"
+
+const u32 DIR_MAX = 64;
+
+JASystem::Kernel::THeap JASystem::WaveArcLoader::sAramHeap(NULL);
 
 /* 80287BD8-80287C24       .text init__Q28JASystem13WaveArcLoaderFv */
-void JASystem::WaveArcLoader::init() {
-    /* Nonmatching */
+bool JASystem::WaveArcLoader::init() {
+    u32 local_8;
+    void* var1 = Kernel::allocFromSysAramFull(&local_8);
+    if (!var1) {
+        return false;
+    }
+    sAramHeap.initRootHeap(var1, local_8, Kernel::THeap::Type0);
+    return true;
 }
 
 /* 80287C24-80287C30       .text getRootHeap__Q28JASystem13WaveArcLoaderFv */
-void JASystem::WaveArcLoader::getRootHeap() {
-    /* Nonmatching */
+JASystem::Kernel::THeap* JASystem::WaveArcLoader::getRootHeap() {
+    return &sAramHeap;
 }
 
+char JASystem::WaveArcLoader::sCurrentDir[DIR_MAX] = "/Banks/";
+
 /* 80287C30-80287D24       .text setCurrentDir__Q28JASystem13WaveArcLoaderFPCc */
-void JASystem::WaveArcLoader::setCurrentDir(const char*) {
+void JASystem::WaveArcLoader::setCurrentDir(const char* dir) {
     /* Nonmatching */
+    //JUT_ASSERT(60, std::strlen(dir) < DIR_MAX);
+    strcpy(sCurrentDir, dir);
+    int len = strlen(sCurrentDir);
+    if (sCurrentDir[len - 1] == '/') {
+        return;
+    }
+    JUT_ASSERT(65, len+1 < DIR_MAX);
+    sCurrentDir[len] = '/';
+    sCurrentDir[len+1] = 0;
 }
 
 /* 80287D24-80287D30       .text getCurrentDir__Q28JASystem13WaveArcLoaderFv */
-void JASystem::WaveArcLoader::getCurrentDir() {
-    /* Nonmatching */
+char* JASystem::WaveArcLoader::getCurrentDir() {
+    return sCurrentDir;
 }
 
 /* 80287D30-80287DA4       .text __ct__Q28JASystem8TWaveArcFv */
-JASystem::TWaveArc::TWaveArc() {
-    /* Nonmatching */
+JASystem::TWaveArc::TWaveArc() : field_0x4(this) {
+    field_0x4c = 0;
+    field_0x68 = 0;
+    field_0x6c = -1;
+    field_0x70 = 0;
+    field_0x74 = 0;
+    OSInitMutex(&mMutex);
 }
 
 /* 80287DA4-80287E34       .text loadSetup__Q28JASystem8TWaveArcFUl */
-void JASystem::TWaveArc::loadSetup(unsigned long) {
-    /* Nonmatching */
+bool JASystem::TWaveArc::loadSetup(u32 param_1) {
+    OSLockMutex(&mMutex);
+    if (field_0x74 != param_1) {
+        OSUnlockMutex(&mMutex);
+        return false;
+    }
+    if (field_0x68 != 1) {
+        OSUnlockMutex(&mMutex);
+        return false;
+    }
+    field_0x4c = 1;
+    field_0x68 = 2;
+    OSUnlockMutex(&mMutex);
+    return true;
 }
 
 /* 80287E34-80287EB8       .text eraseSetup__Q28JASystem8TWaveArcFv */
-void JASystem::TWaveArc::eraseSetup() {
-    /* Nonmatching */
+bool JASystem::TWaveArc::eraseSetup() {
+    OSLockMutex(&mMutex);
+    if (field_0x68 == 0) {
+        OSUnlockMutex(&mMutex);
+        return false;
+    }
+    if (field_0x68 == 1) {
+        field_0x68 = 0;
+        OSUnlockMutex(&mMutex);
+        return false;
+    }
+    field_0x4c = 0;
+    field_0x68 = 0;
+    OSUnlockMutex(&mMutex);
+    return true;
 }
 
+struct unk_message {
+    JASystem::TWaveArc* field_0x0;
+    int field_0x4;
+    void* field_0x8;
+    u32 field_0xc;
+};
+
 /* 80287EB8-80287F48       .text loadToAramCallback__Q28JASystem8TWaveArcFPv */
-void JASystem::TWaveArc::loadToAramCallback(void*) {
+s32 JASystem::TWaveArc::loadToAramCallback(void* param_1) {
     /* Nonmatching */
+    unk_message* msg = (unk_message*)param_1;
+    if (JKRDvdAramRipper::loadToAram(msg->field_0x4, u32(msg->field_0x8), EXPAND_SWITCH_UNKNOWN0, 0, 0) == 0) {
+        return -1;
+    }
+    TWaveArc* waveArc = msg->field_0x0;
+    if (!waveArc->loadSetup(msg->field_0xc)) {
+        return 0;
+    }
+    waveArc->onLoadDone();
+    return 0;
 }
 
 /* 80287F48-80287FE4       .text sendLoadCmd__Q28JASystem8TWaveArcFv */
-void JASystem::TWaveArc::sendLoadCmd() {
+bool JASystem::TWaveArc::sendLoadCmd() {
     /* Nonmatching */
+    OSLockMutex(&mMutex);
+    field_0x4c = 0;
+    field_0x68 = 1;
+    unk_message msg;
+    msg.field_0x0 = this;
+    msg.field_0x4 = field_0x6c;
+    msg.field_0x8 = field_0x4.mBase;
+    msg.field_0xc = ++field_0x74;
+    OSUnlockMutex(&mMutex);
+    if (!Dvd::sendCmdMsg(loadToAramCallback, &msg, sizeof(msg))) {
+        field_0x4.free();
+        return false;
+    }
+    return true;
 }
 
 /* 80287FE4-802880A0       .text load__Q28JASystem8TWaveArcFPQ38JASystem6Kernel5THeap */
-void JASystem::TWaveArc::load(JASystem::Kernel::THeap*) {
+void JASystem::TWaveArc::load(Kernel::THeap*) {
     /* Nonmatching */
 }
 
 /* 802880A0-802880C4       .text erase__Q28JASystem8TWaveArcFv */
-void JASystem::TWaveArc::erase() {
-    /* Nonmatching */
+bool JASystem::TWaveArc::erase() {
+    return field_0x4.free();
 }
 
 /* 802880C4-8028810C       .text onDispose__Q28JASystem8TWaveArcFv */
 void JASystem::TWaveArc::onDispose() {
-    /* Nonmatching */
+    if (eraseSetup()) {
+        onEraseDone();
+    }
 }
 
 /* 8028810C-8028816C       .text setEntryNum__Q28JASystem8TWaveArcFl */
-void JASystem::TWaveArc::setEntryNum(long) {
+void JASystem::TWaveArc::setEntryNum(s32) {
     /* Nonmatching */
 }
 
 /* 8028816C-80288214       .text setFileName__Q28JASystem8TWaveArcFPCc */
-void JASystem::TWaveArc::setFileName(const char*) {
-    /* Nonmatching */
+void JASystem::TWaveArc::setFileName(const char* param_1) {
+    char* currentDir = WaveArcLoader::getCurrentDir();
+    size_t size = strlen(currentDir);
+    size += strlen(param_1);
+    char* str = new (JKRGetSystemHeap(), -4) char[size + 1];
+    strcpy(str, currentDir);
+    strcat(str, param_1);
+    str[size] = 0;
+    s32 entry = DVDConvertPathToEntrynum(str);
+    delete[] str;
+    if (entry >= 0) {
+        setEntryNum(entry);
+    }
 }
-
-/* 80288214-8028828C       .text __dt__Q38JASystem6Kernel5THeapFv */
-JASystem::Kernel::THeap::~THeap() {
-    /* Nonmatching */
-}
-