diff --git a/src/include/bss.h b/src/include/bss.h
index 108e09e32..e3a6a508e 100644
--- a/src/include/bss.h
+++ b/src/include/bss.h
@@ -51,7 +51,7 @@ extern u32 var8009a918;
 extern u8 g_RdpDramStack[SP_DRAM_STACK_SIZE8];
 extern u32 var8009c2d0;
 extern struct var8009c340 var8009c340;
-extern u32 var8009c344;
+extern u8 var8009c344[2];
 extern u32 var8009c3e0;
 extern u8 *var8009c3f4;
 extern u8 *var8009c640;
diff --git a/src/lib/speaker.c b/src/lib/speaker.c
index ba9ff7fb2..79b8e9d93 100644
--- a/src/lib/speaker.c
+++ b/src/lib/speaker.c
@@ -2,6 +2,7 @@
 #include "constants.h"
 #include "bss.h"
 #include "lib/snd.h"
+#include "lib/speaker.h"
 #include "lib/lib_2fc60.h"
 #include "lib/lib_30ce0.h"
 #include "lib/lib_317f0.h"
@@ -19,8 +20,9 @@
 #include "types.h"
 
 struct var8009c340 var8009c340;
-u32 var8009c344;
-u32 var8009c348;
+u8 var8009c344[2];
+u8 var8009c346[2];
+u8 var8009c348[4];
 
 void speakersSetMode(u8 mode)
 {
@@ -47,95 +49,38 @@ void speakersSetMode(u8 mode)
 	}
 }
 
-GLOBAL_ASM(
-glabel speaker00034104
-/*    34104:	27bdfff8 */ 	addiu	$sp,$sp,-8
-/*    34108:	14a00004 */ 	bnez	$a1,.L0003411c
-/*    3410c:	00000000 */ 	nop
-/*    34110:	3c05800a */ 	lui	$a1,%hi(var8009c348)
-/*    34114:	00a42821 */ 	addu	$a1,$a1,$a0
-/*    34118:	90a5c348 */ 	lbu	$a1,%lo(var8009c348)($a1)
-.L0003411c:
-/*    3411c:	3c01800a */ 	lui	$at,%hi(var8009c344)
-/*    34120:	00240821 */ 	addu	$at,$at,$a0
-/*    34124:	a020c344 */ 	sb	$zero,%lo(var8009c344)($at)
-/*    34128:	3c01800a */ 	lui	$at,%hi(var8009c344+0x2)
-/*    3412c:	00240821 */ 	addu	$at,$at,$a0
-/*    34130:	a020c346 */ 	sb	$zero,%lo(var8009c344+0x2)($at)
-/*    34134:	00a03025 */ 	or	$a2,$a1,$zero
-/*    34138:	24010002 */ 	addiu	$at,$zero,0x2
-/*    3413c:	10c1000c */ 	beq	$a2,$at,.L00034170
-/*    34140:	00000000 */ 	nop
-/*    34144:	24010003 */ 	addiu	$at,$zero,0x3
-/*    34148:	10c10013 */ 	beq	$a2,$at,.L00034198
-/*    3414c:	00000000 */ 	nop
-/*    34150:	24010004 */ 	addiu	$at,$zero,0x4
-/*    34154:	10c1001a */ 	beq	$a2,$at,.L000341c0
-/*    34158:	00000000 */ 	nop
-/*    3415c:	24010005 */ 	addiu	$at,$zero,0x5
-/*    34160:	10c10021 */ 	beq	$a2,$at,.L000341e8
-/*    34164:	00000000 */ 	nop
-/*    34168:	1000002d */ 	b	.L00034220
-/*    3416c:	00000000 */ 	nop
-.L00034170:
-/*    34170:	3c0e800a */ 	lui	$t6,%hi(var8009c340)
-/*    34174:	91cec340 */ 	lbu	$t6,%lo(var8009c340)($t6)
-/*    34178:	11c00005 */ 	beqz	$t6,.L00034190
-/*    3417c:	00000000 */ 	nop
-/*    34180:	3c01800a */ 	lui	$at,%hi(var8009c344+0x2)
-/*    34184:	00240821 */ 	addu	$at,$at,$a0
-/*    34188:	240f0001 */ 	addiu	$t7,$zero,0x1
-/*    3418c:	a02fc346 */ 	sb	$t7,%lo(var8009c344+0x2)($at)
-.L00034190:
-/*    34190:	10000023 */ 	b	.L00034220
-/*    34194:	00000000 */ 	nop
-.L00034198:
-/*    34198:	3c18800a */ 	lui	$t8,%hi(var8009c340)
-/*    3419c:	9318c340 */ 	lbu	$t8,%lo(var8009c340)($t8)
-/*    341a0:	13000005 */ 	beqz	$t8,.L000341b8
-/*    341a4:	00000000 */ 	nop
-/*    341a8:	3c01800a */ 	lui	$at,%hi(var8009c344)
-/*    341ac:	00240821 */ 	addu	$at,$at,$a0
-/*    341b0:	24190001 */ 	addiu	$t9,$zero,0x1
-/*    341b4:	a039c344 */ 	sb	$t9,%lo(var8009c344)($at)
-.L000341b8:
-/*    341b8:	10000019 */ 	b	.L00034220
-/*    341bc:	00000000 */ 	nop
-.L000341c0:
-/*    341c0:	3c08800a */ 	lui	$t0,%hi(var8009c340+0x1)
-/*    341c4:	9108c341 */ 	lbu	$t0,%lo(var8009c340+0x1)($t0)
-/*    341c8:	15000005 */ 	bnez	$t0,.L000341e0
-/*    341cc:	00000000 */ 	nop
-/*    341d0:	3c01800a */ 	lui	$at,%hi(var8009c344)
-/*    341d4:	00240821 */ 	addu	$at,$at,$a0
-/*    341d8:	24090001 */ 	addiu	$t1,$zero,0x1
-/*    341dc:	a029c344 */ 	sb	$t1,%lo(var8009c344)($at)
-.L000341e0:
-/*    341e0:	1000000f */ 	b	.L00034220
-/*    341e4:	00000000 */ 	nop
-.L000341e8:
-/*    341e8:	3c0a800a */ 	lui	$t2,%hi(var8009c340+0x1)
-/*    341ec:	914ac341 */ 	lbu	$t2,%lo(var8009c340+0x1)($t2)
-/*    341f0:	15400009 */ 	bnez	$t2,.L00034218
-/*    341f4:	00000000 */ 	nop
-/*    341f8:	3c01800a */ 	lui	$at,%hi(var8009c344)
-/*    341fc:	00240821 */ 	addu	$at,$at,$a0
-/*    34200:	240b0001 */ 	addiu	$t3,$zero,0x1
-/*    34204:	a02bc344 */ 	sb	$t3,%lo(var8009c344)($at)
-/*    34208:	3c01800a */ 	lui	$at,%hi(var8009c344+0x2)
-/*    3420c:	00240821 */ 	addu	$at,$at,$a0
-/*    34210:	240c0001 */ 	addiu	$t4,$zero,0x1
-/*    34214:	a02cc346 */ 	sb	$t4,%lo(var8009c344+0x2)($at)
-.L00034218:
-/*    34218:	10000001 */ 	b	.L00034220
-/*    3421c:	00000000 */ 	nop
-.L00034220:
-/*    34220:	3c01800a */ 	lui	$at,%hi(var8009c348)
-/*    34224:	00240821 */ 	addu	$at,$at,$a0
-/*    34228:	a025c348 */ 	sb	$a1,%lo(var8009c348)($at)
-/*    3422c:	10000001 */ 	b	.L00034234
-/*    34230:	00000000 */ 	nop
-.L00034234:
-/*    34234:	03e00008 */ 	jr	$ra
-/*    34238:	27bd0008 */ 	addiu	$sp,$sp,0x8
-);
+void speaker00034104(s32 index, s32 arg1)
+{
+	if (arg1 == 0) {
+		arg1 = var8009c348[index];
+	}
+
+	var8009c344[index] = 0;
+	var8009c346[index] = 0;
+
+	switch (arg1) {
+	case 2:
+		if (var8009c340.surround) {
+			var8009c346[index] = 1;
+		}
+		break;
+	case 3:
+		if (var8009c340.surround) {
+			var8009c344[index] = 1;
+		}
+		break;
+	case 4:
+		if (!var8009c340.mono) {
+			var8009c344[index] = 1;
+		}
+		break;
+	case 5:
+		if (!var8009c340.mono) {
+			var8009c344[index] = 1;
+			var8009c346[index] = 1;
+		}
+		break;
+	}
+
+	var8009c348[index] = arg1;
+}