diff --git a/d1x-rebirth/main/altsound.c b/d1x-rebirth/main/altsound.c
deleted file mode 100644
index 4ea821817..000000000
--- a/d1x-rebirth/main/altsound.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/* altsound.c created on 11/13/99 by Victor Rachels to use alternate sounds */
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include "strio.h"
-#include "pstypes.h"
-#include "d_io.h"
-#include "u_mem.h"
-#include "error.h"
-#include "sounds.h"
-#include "digi.h"
-#include "altsound.h"
-
-
-int use_alt_sounds=0;
-digi_sound altsound_list[MAX_SOUNDS];
-int use_altsound[MAX_SOUNDS];
-
-int digi_xlat_sound(int soundnum)
-{
-	if (soundnum < 0)
-		return -1;
-
-	if (GameArg.SysLowMem)
-	{
-		soundnum = AltSounds[soundnum];
-		if (soundnum == 255)
-			return -1;
-	}
-
-	Assert(Sounds[soundnum] != 255);	//if hit this, probably using undefined sound
-
-	return Sounds[soundnum];
-}
-
-digi_sound *Sounddat(int soundnum)
-{
-  if(use_altsound[soundnum] && altsound_list[soundnum].data)
-   return &altsound_list[soundnum];
-  else
-   {
-    int i;
-     i = digi_xlat_sound(soundnum);
-      if (i < 0)
-       return NULL;
-      else
-       return &(GameSounds[i]);
-   }
-}
-
-void load_alt_sounds(char *soundfile_list)
-{
- FILE *list,*sound;
- char *line,word[256];
- int i,blockalign=0,datsize=0,bits=0,freq=0;
-
-  memset(&use_altsound,0,sizeof(int) * MAX_SOUNDS);
-  memset(&altsound_list,0,sizeof(digi_sound) * MAX_SOUNDS);
-
-  list=fopen(soundfile_list,"rt");
-
-   if(!list) return;
-
-   while(!feof(list))
-    {
-      line=fsplitword(list,'\n');
-       if((line) &&
-          (line[0]!='#') &&
-          (sscanf(line,"%i=%s\n",&i,word)==2) &&
-          (i >= 0) &&
-          (i <= MAX_SOUNDS) )
-        {
-          sound=fopen(word,"rb");
-           if(sound)
-            {
-              fseek(sound,40,SEEK_SET);
-              fread(&(datsize),sizeof(u_int32_t),1,sound);
-
-              altsound_list[i].data = (void *)d_malloc(datsize);
-
-               if(altsound_list[i].data)
-                {
-                  fseek(sound,34,SEEK_SET);
-                  fread(&(bits),sizeof(u_int16_t),1,sound);
-
-                  fseek(sound,24,SEEK_SET);
-                  fread(&(freq),sizeof(u_int32_t),1,sound);
-
-                  fseek(sound,32,SEEK_SET);
-                  fread(&(blockalign),sizeof(u_int16_t),1,sound);
-
-                  fseek(sound,44,SEEK_SET);
-                  fread(altsound_list[i].data,datsize,1,sound);
-
-                   if(!ferror(sound))
-                    {
-                      altsound_list[i].bits=bits;
-                      altsound_list[i].freq=freq;
-#ifdef ALLEGRO
-                      altsound_list[i].len=datsize/blockalign;
-                      altsound_list[i].loop_start=0;
-                      altsound_list[i].loop_end = altsound_list[i].len;
-                      altsound_list[i].priority=128;
-                      altsound_list[i].param=-1;
-#else
-                      altsound_list[i].length=datsize;
-#endif
-                      use_alt_sounds++;
-                      use_altsound[i]=1;
-                    }
-                }
-              fclose(sound);
-            }
-          d_free(line);
-        }
-    }
-  fclose(list);
-}
-
-void free_alt_sounds()
-{
- int i;
-   for(i=0;i<MAX_SOUNDS;i++)
-    if(use_altsound[i] && altsound_list[i].data)
-     {
-       d_free(altsound_list[i].data);
-       use_altsound[i]=0;
-       use_alt_sounds--;
-     }
-
-   for(i=0;i<MAX_SOUNDS;i++)
-    if(use_altsound[i] || altsound_list[i].data || use_alt_sounds)
-     Error("Something screwed in freeing altsounds (num:%i)\n",i);
-}
diff --git a/d1x-rebirth/main/altsound.h b/d1x-rebirth/main/altsound.h
deleted file mode 100644
index a026bbce1..000000000
--- a/d1x-rebirth/main/altsound.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* altsound.h created on 11/13/99 by Victor Rachels to use alternate sounds */
-#ifndef _ALTSOUND_H
-#define _ALTSOUND_H
-
-extern int use_alt_sounds;
-extern int use_altsound[MAX_SOUNDS];
-extern digi_sound altsound_list[MAX_SOUNDS];
-
-void load_alt_sounds(char *fname);
-void free_alt_sounds();
-
-digi_sound *Sounddat(int soundnum);
-int digi_xlat_sound(int soundnum);
-
-#endif // _ALTSOUND_H