diff --git a/include/2.0L/PR/n_libaudio.h b/include/2.0L/PR/n_libaudio.h
index 0fc0c637..2c7a5f33 100644
--- a/include/2.0L/PR/n_libaudio.h
+++ b/include/2.0L/PR/n_libaudio.h
@@ -191,7 +191,7 @@ typedef struct struct_81_s{
     f32 unk44; //volume
     ALMicroTime unk48; //time_remaining?
     s32 unk4C;
-} Struct81s;
+} N_AL_Struct81s;
 
 typedef struct N_ALVoiceState_s {
     struct N_ALVoiceState_s *next;/* MUST be first                */
diff --git a/src/core1/code_3A70.c b/src/core1/code_3A70.c
index c838d51c..1c1efd5a 100644
--- a/src/core1/code_3A70.c
+++ b/src/core1/code_3A70.c
@@ -3,8 +3,8 @@
 #include "variables.h"
 #include "n_libaudio.h"
 
-void func_802444C0(Struct81s *arg0);
-void func_80244050(ALEventQueue *arg0, Struct81s *arg1, u16 arg2);
+void func_802444C0(N_AL_Struct81s *arg0);
+void func_80244050(ALEventQueue *arg0, N_AL_Struct81s *arg1, u16 arg2);
 
 extern Gfx D_80275880[];
 
@@ -168,9 +168,9 @@ void func_802424D4(Gfx **gfx, Mtx **mtx, Vtx **vtx, f32 arg3[3], f32 arg4[3], f3
 
 // BREAK???===
 extern struct{
-    Struct81s *unk0;
-    Struct81s *unk4;
-    Struct81s *unk8;
+    N_AL_Struct81s *unk0;
+    N_AL_Struct81s *unk4;
+    N_AL_Struct81s *unk8;
 }D_802758C0;
 
 extern N_ALSndPlayer *D_802758CC;
@@ -202,7 +202,7 @@ extern struct {
     // D_802758CC->target = NULL;
     // D_802758CC->frameTime = 33000;
     // ;
-    // D_802758CC->sndState = alHeapDBAlloc(NULL, 0, arg0->unkC, 1, arg0->unk0 * sizeof(Struct81s));
+    // D_802758CC->sndState = alHeapDBAlloc(NULL, 0, arg0->unkC, 1, arg0->unk0 * sizeof(N_AL_Struct81s));
     // alEvtqNew(&D_802758CC->evtq, alHeapDBAlloc(NULL, 0, arg0->unkC, 1, arg0->unk4 * 0x1C), arg0->unk4);
     // // var_s0 = 1;
     // // var_s1 = 0x50;
@@ -259,7 +259,7 @@ void func_8024324C(N_ALSndPlayer *arg0) {
 
 #pragma GLOBAL_ASM("asm/nonmatchings/core1/code_3A70/func_802432F8.s")
 
-void func_80243F84(Struct81s *arg0) {
+void func_80243F84(N_AL_Struct81s *arg0) {
     if (arg0->unk3F & 4) {
         n_alSynStopVoice(&arg0->voice);
         n_alSynFreeVoice(&arg0->voice);
@@ -268,7 +268,7 @@ void func_80243F84(Struct81s *arg0) {
     func_80244050(&D_802758CC->evtq, arg0, 0xFFFF);
 }
 
-void func_80243FE4(Struct81s *arg0) {
+void func_80243FE4(N_AL_Struct81s *arg0) {
     ALEvent evt;
     f32 sp1C;
 
@@ -279,7 +279,7 @@ void func_80243FE4(Struct81s *arg0) {
     alEvtqPostEvent(&D_802758CC->evtq, &evt, 33333);
 }
 
-void func_80244050(ALEventQueue *arg0, Struct81s *arg1, u16 arg2) {
+void func_80244050(ALEventQueue *arg0, N_AL_Struct81s *arg1, u16 arg2) {
     s32 pad[5];
     u32 mask;
     ALEventListItem *next_event_list;
@@ -300,9 +300,9 @@ void func_80244050(ALEventQueue *arg0, Struct81s *arg1, u16 arg2) {
 }
 
 s32 func_80244110(u16 *arg0, u16 *arg1) {
-    Struct81s *var_v0;
-    Struct81s *var_v1_2;
-    Struct81s *var_a2;
+    N_AL_Struct81s *var_v0;
+    N_AL_Struct81s *var_v1_2;
+    N_AL_Struct81s *var_a2;
     u16 var_a0;
     u16 var_a3;
     u16 var_v1;
@@ -312,16 +312,16 @@ s32 func_80244110(u16 *arg0, u16 *arg1) {
     var_a2 = D_802758C0.unk4;
     
     for(var_a3 = 0; var_v0 != NULL; var_a3++){
-        var_v0 = (Struct81s *) var_v0->node.next;
+        var_v0 = (N_AL_Struct81s *) var_v0->node.next;
     }
 
     
     for(var_a0 = 0; var_v1_2 != NULL; var_a0++) {
-        var_v1_2 = (Struct81s *) var_v1_2->node.next;
+        var_v1_2 = (N_AL_Struct81s *) var_v1_2->node.next;
     }
     
     for(var_v1 = 0; var_a2 != NULL; var_v1++) {
-        var_a2 = (Struct81s *) var_a2->node.prev;
+        var_a2 = (N_AL_Struct81s *) var_a2->node.prev;
     }
 
     *arg0 = var_a0;
@@ -333,7 +333,7 @@ s32 func_80244110(u16 *arg0, u16 *arg1) {
 #ifndef NONMATCHING
 #pragma GLOBAL_ASM("asm/nonmatchings/core1/code_3A70/func_80244190.s")
 #else
-void func_80244190(Struct81s *arg0) {
+void func_80244190(N_AL_Struct81s *arg0) {
     ALMicroTime *temp_a1;
     s32 prev_volume;
     s32 temp_t1;
@@ -343,10 +343,10 @@ void func_80244190(Struct81s *arg0) {
     u8 temp_t6;
     u8 var_a2;
     ALEnvelope *envelope;
-    Struct81s *var_v0;
-    Struct81s *var_v1;
+    N_AL_Struct81s *var_v0;
+    N_AL_Struct81s *var_v1;
 
-    for(var_v0 = D_802758C0.unk0; var_v0 != NULL; var_v0 = (Struct81s *)var_v0->node.next){
+    for(var_v0 = D_802758C0.unk0; var_v0 != NULL; var_v0 = (N_AL_Struct81s *)var_v0->node.next){
         var_v1 = var_v0;
         envelope = var_v0->unk8->envelope;
         temp_a1 = &envelope->attackTime;
@@ -375,10 +375,10 @@ void func_80244190(Struct81s *arg0) {
 #ifndef NONMATCHING
 #pragma GLOBAL_ASM("asm/nonmatchings/core1/code_3A70/func_8024431C.s")
 #else
-Struct81s *func_8024431C(ALBank *bank, ALSound *sound) {
+N_AL_Struct81s *func_8024431C(ALBank *bank, ALSound *sound) {
     s32 pad;
     ALKeyMap *sp30;
-    Struct81s *temp_s0;
+    N_AL_Struct81s *temp_s0;
     OSIntMask mask;
     s32 sp24;
 
@@ -386,7 +386,7 @@ Struct81s *func_8024431C(ALBank *bank, ALSound *sound) {
     sp30 = sound->keyMap;
     if (temp_s0 != NULL) {
         mask = osSetIntMask(OS_IM_NONE);
-        D_802758C0.unk8 = (Struct81s *) temp_s0->unk0.next;
+        D_802758C0.unk8 = (N_AL_Struct81s *) temp_s0->unk0.next;
         alUnlink((ALLink *)temp_s0);
         if (D_802758C0.unk0 != NULL) {
             temp_s0->unk0.next = D_802758C0.unk0;
@@ -427,18 +427,18 @@ Struct81s *func_8024431C(ALBank *bank, ALSound *sound) {
 }
 #endif
 
-void func_802444C0(Struct81s *arg0){
-    Struct81s *var_v0;
+void func_802444C0(N_AL_Struct81s *arg0){
+    N_AL_Struct81s *var_v0;
 
     sizeof(ALVoice);
 
     var_v0 = D_802758C0.unk0;
     if(arg0 == D_802758C0.unk0){
-        D_802758C0.unk0 = (Struct81s *)arg0->node.next;
+        D_802758C0.unk0 = (N_AL_Struct81s *)arg0->node.next;
     }
 
     if(arg0 == D_802758C0.unk4){
-        D_802758C0.unk4 = (Struct81s *)arg0->node.prev;
+        D_802758C0.unk4 = (N_AL_Struct81s *)arg0->node.prev;
     }
 
     alUnlink((ALLink *)arg0);
@@ -468,12 +468,12 @@ void func_802444C0(Struct81s *arg0){
     }
 }
 
-void func_80244594(Struct81s *arg0, u8 arg1){
+void func_80244594(N_AL_Struct81s *arg0, u8 arg1){
     if(arg0 != NULL)
         arg0->unk36 = arg1;
 }
 
-s32 func_802445AC(Struct81s *arg0){
+s32 func_802445AC(N_AL_Struct81s *arg0){
     if(arg0 != NULL)
         return arg0->unk40;
     return 0;
@@ -490,12 +490,12 @@ bool func_802445C4(ALBank *bank, s16 arg1){
 void *func_80244608(ALBank *bank, s16 arg1, struct46s *arg2) {
     ALKeyMap *temp_v0_2;
     ALSound *temp_s2;
-    Struct81s *temp_v0;
+    N_AL_Struct81s *temp_v0;
     s32 var_s3;
     s16 sp6E;
     s32 sp68;
     s32 var_s4;
-    Struct81s *var_fp;
+    N_AL_Struct81s *var_fp;
     ALEvent sp50;
     ALEvent sp40;
 
@@ -548,7 +548,7 @@ void *func_80244608(ALBank *bank, s16 arg1, struct46s *arg2) {
     return var_fp;
 }
 
-void func_80244814(Struct81s *arg0){
+void func_80244814(N_AL_Struct81s *arg0){
     ALEvent evt;
 
     evt.type = 0x400;
@@ -562,10 +562,10 @@ void func_80244814(Struct81s *arg0){
 void func_80244860(u8 arg0) {
     OSIntMask mask;
     ALEvent evt;
-    Struct81s *var_s0;
+    N_AL_Struct81s *var_s0;
 
     mask = osSetIntMask(1U);
-    for(var_s0 = D_802758C0.unk0; var_s0 != NULL; var_s0 =  (Struct81s *)var_s0->node.next){
+    for(var_s0 = D_802758C0.unk0; var_s0 != NULL; var_s0 =  (N_AL_Struct81s *)var_s0->node.next){
         evt.type = 0x400;
         ((s32 *)&evt.msg)[0] = (s32)var_s0;
         if ((var_s0->unk3F & arg0) == arg0) {
@@ -604,7 +604,7 @@ s32 func_802449C4(u8 arg0){
 }
 
 void func_802449E4(u8 arg0, u16 arg1) {
-    Struct81s *var_s0;
+    N_AL_Struct81s *var_s0;
     s32 pad30;
     ALEvent evt;
 
@@ -616,7 +616,7 @@ void func_802449E4(u8 arg0, u16 arg1) {
             ((s32 *)&evt.msg)[0] = var_s0;
             alEvtqPostEvent(&D_802758CC->evtq, &evt, 0);
         }
-        var_s0 = (Struct81s *)var_s0->node.next;
+        var_s0 = (N_AL_Struct81s *)var_s0->node.next;
     }
 }