diff --git a/libs/audio/renderer/flac.c b/libs/audio/renderer/flac.c
index b94660cc8..fbfd28b55 100644
--- a/libs/audio/renderer/flac.c
+++ b/libs/audio/renderer/flac.c
@@ -282,29 +282,29 @@ static sfxbuffer_t *
 flac_load (flacfile_t *ff, sfxblock_t *block, cache_allocator_t allocator)
 {
 	float      *data;
-	sfxbuffer_t *sc = 0;
+	sfxbuffer_t *sb = 0;
 	sfx_t      *sfx = block->sfx;
 	wavinfo_t  *info = &block->wavinfo;
 
 	data = malloc (info->datalen);
 	if (!data)
 		goto bail;
-	sc = SND_GetCache (info->frames, info->rate, info->channels,
+	sb = SND_GetCache (info->frames, info->rate, info->channels,
 					   block, allocator);
-	if (!sc)
+	if (!sb)
 		goto bail;
-	sc->sfx = sfx;
+	sb->sfx = sfx;
 	if (flac_read (ff, data, info->frames) < 0)
 		goto bail;
-	SND_SetPaint (sc);
-	SND_SetupResampler (sc, 0);
-	SND_Resample (sc, data, info->frames);
-	sc->head = sc->length;
+	SND_SetPaint (sb);
+	SND_SetupResampler (sb, 0);
+	SND_Resample (sb, data, info->frames);
+	sb->head = sb->length;
   bail:
 	if (data)
 		free (data);
 	flac_close (ff);
-	return sc;
+	return sb;
 }
 
 static void
diff --git a/libs/audio/renderer/snd_mem.c b/libs/audio/renderer/snd_mem.c
index 260f16a37..49c263ac4 100644
--- a/libs/audio/renderer/snd_mem.c
+++ b/libs/audio/renderer/snd_mem.c
@@ -351,18 +351,18 @@ SND_GetCache (long frames, int rate, int channels,
 {
 	int         len, size;
 	float		stepscale;
-	sfxbuffer_t *sc;
+	sfxbuffer_t *sb;
 	sfx_t      *sfx = block->sfx;
 	snd_t      *snd = sfx->snd;
 
 	stepscale = (float) rate / snd->speed;
 	len = size = frames / stepscale;
 	size *= sizeof (float) * channels;
-	sc = allocator (&block->cache, sizeof (sfxbuffer_t) + size, sfx->name);
-	if (!sc)
+	sb = allocator (&block->cache, sizeof (sfxbuffer_t) + size, sfx->name);
+	if (!sb)
 		return 0;
-	memset (sc, 0, sizeof (sfxbuffer_t) + size);
-	sc->length = len;
-	memcpy (sc->data + len * channels, "\xde\xad\xbe\xef", 4);
-	return sc;
+	memset (sb, 0, sizeof (sfxbuffer_t) + size);
+	sb->length = len;
+	memcpy (sb->data + len * channels, "\xde\xad\xbe\xef", 4);
+	return sb;
 }
diff --git a/libs/audio/renderer/snd_mix.c b/libs/audio/renderer/snd_mix.c
index 89dba97a4..2ca8bddad 100644
--- a/libs/audio/renderer/snd_mix.c
+++ b/libs/audio/renderer/snd_mix.c
@@ -68,7 +68,7 @@ check_channel_end (channel_t *ch, sfx_t *sfx, int count, unsigned ltime)
 }
 
 static inline void
-snd_paint_channel (channel_t *ch, sfxbuffer_t *sc, int count)
+snd_paint_channel (channel_t *ch, sfxbuffer_t *sb, int count)
 {
 	unsigned    pos;
 	int         offs = 0;
@@ -82,17 +82,17 @@ snd_paint_channel (channel_t *ch, sfxbuffer_t *sc, int count)
 		count -= offs;
 		ch->pos = 0;
 	}
-	if (ch->pos < sc->pos || ch->pos - sc->pos >= sc->length)
-		sc->setpos (sc, ch->pos);
-	pos = (ch->pos - sc->pos + sc->tail) % sc->length;
-	samps = sc->data + pos * sc->channels;
+	if (ch->pos < sb->pos || ch->pos - sb->pos >= sb->length)
+		sb->setpos (sb, ch->pos);
+	pos = (ch->pos - sb->pos + sb->tail) % sb->length;
+	samps = sb->data + pos * sb->channels;
 
-	if (pos + count > sc->length) {
-		unsigned    sub = sc->length - pos;
-		sc->paint (offs, ch, samps, sub);
-		sc->paint (offs + sub, ch, sc->data, count - sub);
+	if (pos + count > sb->length) {
+		unsigned    sub = sb->length - pos;
+		sb->paint (offs, ch, samps, sub);
+		sb->paint (offs + sub, ch, sb->data, count - sub);
 	} else {
-		sc->paint (offs, ch, samps, count);
+		sb->paint (offs, ch, samps, count);
 	}
 	ch->pos += count;
 }
@@ -104,7 +104,7 @@ SND_PaintChannels (snd_t *snd, unsigned endtime)
 	int         i, count;
 	channel_t  *ch;
 	sfx_t      *sfx;
-	sfxbuffer_t *sc;
+	sfxbuffer_t *sb;
 
 	// clear the paint buffer
 	for (i = 0; i < PAINTBUFFER_SIZE * 2; i++) {
@@ -131,8 +131,8 @@ SND_PaintChannels (snd_t *snd, unsigned endtime)
 			}
 			if (ch->pause)
 				continue;
-			sc = sfx->getbuffer (sfx);
-			if (!sc) {				// something went wrong with the sfx
+			sb = sfx->getbuffer (sfx);
+			if (!sb) {				// something went wrong with the sfx
 				printf ("XXXX sfx blew up!!!!\n");
 				continue;
 			}
@@ -146,9 +146,9 @@ SND_PaintChannels (snd_t *snd, unsigned endtime)
 				count = ((ch->end < end) ? ch->end : end) - ltime;
 				if (count > 0) {
 					if (ch->leftvol || ch->rightvol) {
-						snd_paint_channel (ch, sc, count);
-						if (sc->advance) {
-							if (!sc->advance (sc, count)) {
+						snd_paint_channel (ch, sb, count);
+						if (sb->advance) {
+							if (!sb->advance (sb, count)) {
 								// this channel can no longer be used as its
 								// source has died.
 								ch->done = 1;
@@ -457,7 +457,7 @@ snd_paint_8 (int offs, channel_t *ch, float *samp, unsigned count)
 }
 
 void
-SND_SetPaint (sfxbuffer_t *sc)
+SND_SetPaint (sfxbuffer_t *sb)
 {
 	static sfxpaint_t *painters[] = {
 		0,
@@ -471,8 +471,8 @@ SND_SetPaint (sfxbuffer_t *sc)
 		snd_paint_8,
 	};
 
-	wavinfo_t *info = sc->sfx->wavinfo (sc->sfx);
+	wavinfo_t *info = sb->sfx->wavinfo (sb->sfx);
 	if (info->channels > 8)
 		Sys_Error ("illegal channel count %d", info->channels);
-	sc->paint = painters[info->channels];
+	sb->paint = painters[info->channels];
 }
diff --git a/libs/audio/renderer/snd_resample.c b/libs/audio/renderer/snd_resample.c
index 2045039e0..9e0848350 100644
--- a/libs/audio/renderer/snd_resample.c
+++ b/libs/audio/renderer/snd_resample.c
@@ -54,21 +54,21 @@ typedef struct {
 } snd_null_state_t;
 
 static void
-check_buffer_integrity (sfxbuffer_t *sc, int width, const char *func)
+check_buffer_integrity (sfxbuffer_t *sb, int width, const char *func)
 {
-	byte       *x = (byte *) sc->data + sc->length * width;
+	byte       *x = (byte *) sb->data + sb->length * width;
 	if (memcmp (x, "\xde\xad\xbe\xef", 4))
 		Sys_Error ("%s screwed the pooch %02x%02x%02x%02x", func,
 				   x[0], x[1], x[2], x[3]);
 }
 
 void
-SND_Resample (sfxbuffer_t *sc, float *data, int length)
+SND_Resample (sfxbuffer_t *sb, float *data, int length)
 {
 	int			outcount;
 	double		stepscale;
-	wavinfo_t  *info = sc->sfx->wavinfo (sc->sfx);
-	snd_t      *snd = sc->sfx->snd;
+	wavinfo_t  *info = sb->sfx->wavinfo (sb->sfx);
+	snd_t      *snd = sb->sfx->snd;
 	int         inrate = info->rate;
 	int         outwidth;
 	SRC_DATA    src_data;
@@ -77,15 +77,15 @@ SND_Resample (sfxbuffer_t *sc, float *data, int length)
 	outcount = length * stepscale;
 
 	src_data.data_in = data;
-	src_data.data_out = sc->data + sc->head * sc->channels;
+	src_data.data_out = sb->data + sb->head * sb->channels;
 	src_data.input_frames = length;
 	src_data.output_frames = outcount;
 	src_data.src_ratio = stepscale;
 
-	src_simple (&src_data, SRC_LINEAR, sc->channels);
+	src_simple (&src_data, SRC_LINEAR, sb->channels);
 
 	outwidth = info->channels * sizeof (float);
-	check_buffer_integrity (sc, outwidth, __FUNCTION__);
+	check_buffer_integrity (sb, outwidth, __FUNCTION__);
 }
 
 static int
@@ -140,26 +140,26 @@ snd_seek (sfxstream_t *stream, int pos)
 }
 
 void
-SND_SetupResampler (sfxbuffer_t *sc, int streamed)
+SND_SetupResampler (sfxbuffer_t *sb, int streamed)
 {
 	double		stepscale;
-	wavinfo_t  *info = sc->sfx->wavinfo (sc->sfx);
-	snd_t      *snd = sc->sfx->snd;
+	wavinfo_t  *info = sb->sfx->wavinfo (sb->sfx);
+	snd_t      *snd = sb->sfx->snd;
 	int         inrate = info->rate;
 
 	stepscale = (double) snd->speed / inrate;
 
-	sc->sfx->length = info->frames * stepscale;
+	sb->sfx->length = info->frames * stepscale;
 	if (info->loopstart != (unsigned int)-1)
-		sc->sfx->loopstart = info->loopstart * stepscale;
+		sb->sfx->loopstart = info->loopstart * stepscale;
 	else
-		sc->sfx->loopstart = (unsigned int)-1;
+		sb->sfx->loopstart = (unsigned int)-1;
 
-	sc->channels = info->channels;
+	sb->channels = info->channels;
 
 	if (streamed) {
 		int         err;
-		sfxstream_t *stream = sc->sfx->data.stream;
+		sfxstream_t *stream = sb->sfx->data.stream;
 
 		if (snd->speed == inrate) {
 			stream->state = calloc (sizeof (snd_null_state_t), 1);
diff --git a/libs/audio/renderer/vorbis.c b/libs/audio/renderer/vorbis.c
index 25e6c000b..1477eb303 100644
--- a/libs/audio/renderer/vorbis.c
+++ b/libs/audio/renderer/vorbis.c
@@ -163,29 +163,29 @@ static sfxbuffer_t *
 vorbis_load (OggVorbis_File *vf, sfxblock_t *block, cache_allocator_t allocator)
 {
 	float      *data;
-	sfxbuffer_t *sc = 0;
+	sfxbuffer_t *sb = 0;
 	sfx_t      *sfx = block->sfx;
 	wavinfo_t  *info = &block->wavinfo;
 
 	data = malloc (info->datalen);
 	if (!data)
 		goto bail;
-	sc = SND_GetCache (info->frames, info->rate, info->channels,
+	sb = SND_GetCache (info->frames, info->rate, info->channels,
 					   block, allocator);
-	if (!sc)
+	if (!sb)
 		goto bail;
-	sc->sfx = sfx;
+	sb->sfx = sfx;
 	if (vorbis_read (vf, data, info->frames, info) < 0)
 		goto bail;
-	SND_SetPaint (sc);
-	SND_SetupResampler (sc, 0);
-	SND_Resample (sc, data, info->frames);
-	sc->head = sc->length;
+	SND_SetPaint (sb);
+	SND_SetupResampler (sb, 0);
+	SND_Resample (sb, data, info->frames);
+	sb->head = sb->length;
   bail:
 	if (data)
 		free (data);
 	ov_clear (vf);
-	return sc;
+	return sb;
 }
 
 static void