diff --git a/libctru/include/ctr/CSND.h b/libctru/include/ctr/CSND.h
new file mode 100644
index 0000000..36d3352
--- /dev/null
+++ b/libctru/include/ctr/CSND.h
@@ -0,0 +1,18 @@
+#ifndef CSND_H
+#define CSND_H
+
+#define CSND_SHAREDMEM_DEFAULT 0x10004000
+
+Result CSND_initialize(u32* sharedMem);
+Result CSND_shutdown();
+
+Result CSND_playsound(u32 channel, u32 looping, u32 encoding, u32 samplerate, u32 *vaddr0, u32 *vaddr1, u32 totalbytesize, u32 unk0, u32 unk1);
+void CSND_setchannel_playbackstate(u32 channel, u32 value);
+void CSND_sharedmemtype0_cmd0(u32 channel, u32 value);
+Result CSND_sharedmemtype0_cmdupdatestate(int waitdone);
+
+Result CSND_getchannelstate(u32 entryindex, u32 *out);
+Result CSND_getchannelstate_isplaying(u32 entryindex, u8 *status);
+
+#endif
+
diff --git a/libctru/source/CSND.c b/libctru/source/CSND.c
new file mode 100644
index 0000000..6ab2a7c
--- /dev/null
+++ b/libctru/source/CSND.c
@@ -0,0 +1,325 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctr/types.h>
+
+#include <ctr/CSND.h>
+#include <ctr/svc.h>
+#include <ctr/srv.h>
+
+//See here regarding CSND shared-mem commands, etc: http://3dbrew.org/wiki/CSND_Shared_Memory
+
+Handle CSND_handle = 0;
+Handle CSND_mutexhandle = 0;
+Handle CSND_sharedmemhandle = 0;
+u32 *CSND_sharedmem = NULL;
+static u32 CSND_bitmask=0;
+
+static u32 CSND_sharedmem_cmdblocksize = 0x2000;
+static u32 CSND_sharedmem_startcmdoff = 0;
+static u32 CSND_sharedmem_currentcmdoff = 0;
+
+Result CSND_cmd1(Handle *mutexhandle, Handle *sharedmemhandle, u32 sharedmem_size, u32 off0, u32 off1, u32 off2, u32 off3)
+{
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = 0x00010140;
+	cmdbuf[1] = sharedmem_size;
+	cmdbuf[2] = off0;
+	cmdbuf[3] = off1;
+	cmdbuf[4] = off2;
+	cmdbuf[5] = off3;
+
+	if((ret = svc_sendSyncRequest(CSND_handle))!=0)return ret;
+
+	*mutexhandle = cmdbuf[3];
+	*sharedmemhandle = cmdbuf[4];
+
+	return (Result)cmdbuf[1];
+}
+
+Result CSND_cmd2()
+{
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = 0x00020000;
+
+	if((ret = svc_sendSyncRequest(CSND_handle))!=0)return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result CSND_cmd5(u32 *bitmask)
+{
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = 0x00050000;
+
+	if((ret = svc_sendSyncRequest(CSND_handle))!=0)return ret;
+
+	*bitmask = cmdbuf[2];
+
+	return (Result)cmdbuf[1];
+}
+
+Result CSND_initialize(u32* sharedMem)
+{
+	Result ret=0;
+
+	if(sharedMem==NULL)sharedMem = (u32*)CSND_SHAREDMEM_DEFAULT;
+	CSND_sharedmem = sharedMem;
+
+	ret = srv_getServiceHandle(NULL, &CSND_handle, "csnd:SND");
+	if(ret!=0)return ret;
+
+	ret = CSND_cmd1(&CSND_mutexhandle, &CSND_sharedmemhandle, CSND_sharedmem_cmdblocksize+0x114, CSND_sharedmem_cmdblocksize, CSND_sharedmem_cmdblocksize+8, CSND_sharedmem_cmdblocksize+0xc8, CSND_sharedmem_cmdblocksize+0xd8);
+	if(ret!=0)return ret;
+
+	ret = svc_mapMemoryBlock(CSND_sharedmemhandle, (u32)CSND_sharedmem, 3, 0x10000000);
+	if(ret!=0)return ret;
+
+	memset(CSND_sharedmem, 0, 0x2114);
+
+	ret = CSND_cmd5(&CSND_bitmask);
+	if(ret!=0)return ret;
+
+	return 0;
+}
+
+Result CSND_shutdown()
+{
+	Result ret;
+
+	svc_unmapMemoryBlock(CSND_sharedmemhandle, (u32)CSND_sharedmem);
+	svc_closeHandle(CSND_sharedmemhandle);
+
+	ret = CSND_cmd2();
+	if(ret!=0)return ret;
+
+	return svc_closeHandle(CSND_handle);
+}
+
+Result CSND_cmd3(u32 offset)
+{
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = 0x00030040;
+	cmdbuf[1] = offset;
+
+	if((ret = svc_sendSyncRequest(CSND_handle))!=0)return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+void CSND_writesharedmem_cmdtype0(u16 cmdid, u8 *cmdparams)
+{
+	u16 *ptr;
+	u32 prevoff;
+	s32 outindex=0;
+
+	svc_waitSynchronizationN(&outindex, &CSND_mutexhandle, 1, 0, ~0);
+
+	if(CSND_sharedmem_startcmdoff != CSND_sharedmem_currentcmdoff)
+	{
+		if(CSND_sharedmem_currentcmdoff>=0x20)
+		{
+			prevoff = CSND_sharedmem_currentcmdoff-0x20;
+		}
+		else
+		{
+			prevoff = CSND_sharedmem_cmdblocksize-0x20;
+		}
+
+		ptr = (u16*)&CSND_sharedmem[prevoff>>2];
+		*ptr = CSND_sharedmem_currentcmdoff;
+	}
+
+	ptr = (u16*)&CSND_sharedmem[CSND_sharedmem_currentcmdoff>>2];
+
+	ptr[0] = 0xffff;
+	ptr[1] = cmdid;
+	ptr[2] = 0;
+	ptr[3] = 0;
+	memcpy(&ptr[8>>1], cmdparams, 0x18);
+
+	CSND_sharedmem_currentcmdoff+= 0x20;
+	if(CSND_sharedmem_currentcmdoff >= CSND_sharedmem_cmdblocksize)CSND_sharedmem_currentcmdoff = 0;
+
+	svc_releaseMutex(CSND_mutexhandle);
+}
+
+Result CSND_processtype0cmds()
+{
+	Result ret=0;
+
+	if(CSND_sharedmem_startcmdoff == CSND_sharedmem_currentcmdoff)return 0;
+
+	ret = CSND_cmd3(CSND_sharedmem_startcmdoff);
+	CSND_sharedmem_startcmdoff = CSND_sharedmem_currentcmdoff;
+
+	return ret;
+}
+
+u32 CSND_convertsamplerate(u32 samplerate)
+{
+	return (u32)(6.7027964E+07f / ((float)samplerate));
+}
+
+void CSND_sharedmemtype0_cmd0(u32 channel, u32 value)
+{
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[1] = value;
+
+	CSND_writesharedmem_cmdtype0(0x0, (u8*)&cmdparams);
+}
+
+void CSND_setchannel_playbackstate(u32 channel, u32 value)
+{
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[1] = value;
+
+	CSND_writesharedmem_cmdtype0(0x1, (u8*)&cmdparams);
+}
+
+void CSND_sharedmemtype0_cmd3(u32 channel, u32 physaddr, u32 size)
+{
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[1] = physaddr;
+	cmdparams[2] = size;
+
+	CSND_writesharedmem_cmdtype0(0x3, (u8*)&cmdparams);
+}
+
+void CSND_sharedmemtype0_cmd9(u32 channel, u16 value)
+{
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[1] = value | (value<<16);
+
+	CSND_writesharedmem_cmdtype0(0x9, (u8*)&cmdparams);
+}
+
+void CSND_sharedmemtype0_cmd8(u32 channel, u32 samplerate)
+{
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[1] = CSND_convertsamplerate(samplerate);
+
+	CSND_writesharedmem_cmdtype0(0x8, (u8*)&cmdparams);
+}
+
+void CSND_sharedmemtype0_cmde(u32 channel, u32 looping, u32 encoding, u32 samplerate, u32 unk0, u32 unk1, u32 physaddr0, u32 physaddr1, u32 totalbytesize)
+{
+	u32 val;
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	cmdparams[0] = channel & 0x1f;
+	cmdparams[0] |= (unk0 & 0xf) << 6;
+	if(!looping)cmdparams[0] |= 2 << 10;
+	if(looping)cmdparams[0] |= 1 << 10;
+	cmdparams[0] |= (encoding & 3) << 12;
+	cmdparams[0] |= (unk1 & 3) << 14;
+
+	val = CSND_convertsamplerate(samplerate);
+	if(val<0x42)val = 0x42;
+	if(val>0xffff)val = 0xffff;
+	cmdparams[0] |= val<<16;
+
+	cmdparams[3] = physaddr0;
+	cmdparams[4] = physaddr1;
+	cmdparams[5] = totalbytesize;
+
+	CSND_writesharedmem_cmdtype0(0xe, (u8*)&cmdparams);
+}
+
+Result CSND_sharedmemtype0_cmdupdatestate(int waitdone)
+{
+	u8 *ptr;
+	int ret=0;
+
+	u32 cmdparams[0x18>>2];
+
+	memset(cmdparams, 0, 0x18);
+
+	ptr = (u8*)&CSND_sharedmem[CSND_sharedmem_startcmdoff>>2];
+
+	CSND_writesharedmem_cmdtype0(0x300, (u8*)&cmdparams);
+
+	ret = CSND_processtype0cmds();
+	if(ret!=0)return ret;
+
+	if(waitdone)
+	{
+		while(*ptr == 0);
+	}
+
+	return 0;
+}
+
+Result CSND_playsound(u32 channel, u32 looping, u32 encoding, u32 samplerate, u32 *vaddr0, u32 *vaddr1, u32 totalbytesize, u32 unk0, u32 unk1)
+{
+	u32 physaddr0 = 0;
+	u32 physaddr1 = 0;
+
+	if((u32)vaddr0 >= 0x14000000 && (u32)vaddr0<0x1c000000)physaddr0 = (u32)vaddr0 + 0x0c000000;
+	if((u32)vaddr1 >= 0x14000000 && (u32)vaddr1<0x1c000000)physaddr1 = (u32)vaddr1 + 0x0c000000;
+
+	CSND_sharedmemtype0_cmde(channel, looping, encoding, samplerate, unk0, unk1, physaddr0, physaddr1, totalbytesize);
+	CSND_sharedmemtype0_cmd8(channel, samplerate);
+	if(looping)CSND_sharedmemtype0_cmd3(channel, physaddr0, totalbytesize);
+	CSND_sharedmemtype0_cmd8(channel, samplerate);
+	CSND_sharedmemtype0_cmd9(channel, 0xffff);
+	CSND_setchannel_playbackstate(channel, 1);
+
+	return CSND_sharedmemtype0_cmdupdatestate(0);
+}
+
+Result CSND_getchannelstate(u32 entryindex, u32 *out)
+{
+	Result ret=0;
+
+	if((ret = CSND_sharedmemtype0_cmdupdatestate(1))!=0)return ret;
+
+	memcpy(out, &CSND_sharedmem[(CSND_sharedmem_cmdblocksize+8 + entryindex*0xc) >> 2], 0xc);
+	out[2] -= 0x0c000000;
+
+	return 0;
+}
+
+Result CSND_getchannelstate_isplaying(u32 entryindex, u8 *status)
+{
+	Result ret;
+	u32 entry[0xc>>2];
+
+	ret = CSND_getchannelstate(entryindex, entry);
+	if(ret!=0)return ret;
+
+	*status = entry[0] & 0xff;
+
+	return 0;
+}
+