diff -ur freecraft-030311-old/src/clone/clone.c freecraft-030311/src/clone/clone.c
--- freecraft-030311-old/src/clone/clone.c	2003-03-05 13:31:28.000000000 -0500
+++ freecraft-030311/src/clone/clone.c	2005-06-24 22:04:25.000000000 -0500
@@ -191,6 +191,7 @@
 
 #ifdef USE_SDL
 #include "SDL.h"
+#include "SDL_thread.h"
 #endif
 
 #ifdef __MINGW32__
@@ -225,6 +226,12 @@
 extern SCM CclUnits(void);
 #endif
 
+#ifdef USE_SDLCD
+extern global SDL_mutex *cdromcheck_mutex;
+extern global SDL_cond *cdromcheck_cond;
+extern global int cdromcheck_done;
+#endif
+
 /*----------------------------------------------------------------------------
 --	Variables
 ----------------------------------------------------------------------------*/
@@ -1393,6 +1400,10 @@
 */
 global int main(int argc,char** argv)
 {
+#ifdef USE_SDLCD
+    SDL_Thread *SDLCD_Sound_Thread;
+#endif
+    
 #ifdef USE_BEOS
     //
     //	Parse arguments for BeOS
@@ -1537,8 +1548,26 @@
     InitCcl();				// init CCL and load configurations!
     LoadCcl();
 
+#ifdef USE_SDLCD
+    cdromcheck_mutex = SDL_CreateMutex();
+    cdromcheck_cond = SDL_CreateCond();
+    cdromcheck_done = 0;
+    SDLCD_Sound_Thread = SDL_CreateThread(CDRomCheck, NULL);
+#endif
+
     main1(argc,argv);
 
+#ifdef USE_SDLCD
+    // Signal SDLCD_Sound_Thread to exit, then clean up.
+    SDL_mutexP(cdromcheck_mutex);
+    cdromcheck_done = 1;
+    SDL_CondSignal(cdromcheck_cond);
+    SDL_mutexV(cdromcheck_mutex);
+    SDL_WaitThread(SDLCD_Sound_Thread, NULL);
+    SDL_DestroyCond(cdromcheck_cond);
+    SDL_DestroyMutex(cdromcheck_mutex);
+#endif
+    
     return 0;
 }
 
diff -ur freecraft-030311-old/src/clone/mainloop.c freecraft-030311/src/clone/mainloop.c
--- freecraft-030311-old/src/clone/mainloop.c	2003-03-04 12:11:07.000000000 -0500
+++ freecraft-030311/src/clone/mainloop.c	2005-06-24 21:58:17.000000000 -0500
@@ -69,6 +69,12 @@
 #include "SDL_thread.h"
 #endif
 
+#ifdef USE_SDLCD
+extern global SDL_mutex *cdromcheck_mutex;
+extern global SDL_cond *cdromcheck_cond;
+extern global int cdromcheck_done;
+#endif
+
 //----------------------------------------------------------------------------
 //	Variables
 //----------------------------------------------------------------------------
@@ -726,7 +732,9 @@
 		case 0:				// Check cd-rom
 #if defined(USE_SDLCD)
 		    if ( !(GameCycle%4) ) {	// every 2nd second
-			SDL_CreateThread(CDRomCheck, NULL);
+    			SDL_mutexP(cdromcheck_mutex);
+			SDL_CondSignal(cdromcheck_cond);
+			SDL_mutexV(cdromcheck_mutex);
 		    }
 #elif defined(USE_LIBCDA) || defined(USE_CDDA)
 		    CDRomCheck(NULL);
@@ -735,7 +743,6 @@
 	    }
 #endif
 	}
-
 	UpdateMessages();		// update messages
 
 	//
@@ -822,6 +829,7 @@
 	}
     }
 
+    
     //
     //	Game over
     //
diff -ur freecraft-030311-old/src/sound/sound_server.c freecraft-030311/src/sound/sound_server.c
--- freecraft-030311-old/src/sound/sound_server.c	2003-02-17 00:34:38.000000000 -0500
+++ freecraft-030311/src/sound/sound_server.c	2005-06-24 21:58:18.000000000 -0500
@@ -81,6 +81,7 @@
 
 #if defined(USE_SDLCD)
 #include "SDL.h"
+#include "SDL_thread.h"
 #elif defined(USE_LIBCDA)
 #include "libcda.h"
 #elif defined(USE_CDDA)
@@ -108,6 +109,12 @@
 --	Variables
 ----------------------------------------------------------------------------*/
 
+#ifdef USE_SDLCD
+global SDL_mutex *cdromcheck_mutex;	// Make the CDRomCheck thread once
+global SDL_cond *cdromcheck_cond;       // and use these three variables to
+global int cdromcheck_done = 0;		// interact with it.
+#endif
+
 global int SoundFildes = -1;		/// audio file descriptor
 global int PlayingMusic;		/// flag true if playing music
 global int CallbackMusic;		/// flag true callback ccl if stops
@@ -230,40 +237,48 @@
 global int CDRomCheck(void *unused __attribute__ ((unused)))
 {
 #if defined(USE_SDLCD)
-    if (CDMode != CDModeOff && CDMode != CDModeStopped
-	    && SDL_CDStatus(CDRom) == 1) {
-	DebugLevel0Fn("Playing new track\n");
-	if (CDMode == CDModeAll) {
-	    PlayCDRom(CDModeAll);
-	} else if (CDMode == CDModeRandom) {
-	    PlayCDRom(CDModeRandom);
-	}
-    }
+    SDL_mutexP(cdromcheck_mutex);
+    while (!cdromcheck_done)
+    {
+      SDL_CondWait(cdromcheck_cond, cdromcheck_mutex);
+      if (CDMode != CDModeOff && CDMode != CDModeStopped
+	      && SDL_CDStatus(CDRom) == 1) {
+	  DebugLevel0Fn("Playing new track\n");
+	  if (CDMode == CDModeAll) {
+	      PlayCDRom(CDModeAll);
+	  } else if (CDMode == CDModeRandom) {
+	      PlayCDRom(CDModeRandom);
+	  }
+      }
 #elif defined(USE_LIBCDA)
-    if (CDMode != CDModeOff && CDMode != CDModeStopped
-	    && !cd_current_track() && CDMode != CDModeDefined) {
-	DebugLevel0Fn("Playing new track\n");
-	PlayCDRom(CDMode);
-    } else if (CDMode != CDModeOff && CDMode != CDModeStopped) {
-	if (CDMode == CDModeDefined) {
-	    PlayCDRom(CDMode);
-	}
-	DebugLevel0Fn("get track\n");
-	CDTrack = cd_current_track() + 1;
-	if (CDTrack > NumCDTracks) {
-	    CDTrack = 1;
-	}
-    }
+      if (CDMode != CDModeOff && CDMode != CDModeStopped
+	      && !cd_current_track() && CDMode != CDModeDefined) {
+	  DebugLevel0Fn("Playing new track\n");
+	  PlayCDRom(CDMode);
+      } else if (CDMode != CDModeOff && CDMode != CDModeStopped) {
+	  if (CDMode == CDModeDefined) {
+	      PlayCDRom(CDMode);
+	  }
+	  DebugLevel0Fn("get track\n");
+	  CDTrack = cd_current_track() + 1;
+	  if (CDTrack > NumCDTracks) {
+	      CDTrack = 1;
+	  }
+      }
 #elif defined(USE_CDDA)
-    if (CDMode != CDModeOff && CDMode != CDModeStopped
-	    && !PlayingMusic) {
-	DebugLevel0Fn("Playing new track\n");
-	if (CDMode == CDModeAll) {
-	    PlayCDRom(CDModeAll);
-	} else if (CDMode == CDModeRandom) {
-	    PlayCDRom(CDModeRandom);
-	}
+      if (CDMode != CDModeOff && CDMode != CDModeStopped
+	      && !PlayingMusic) {
+	  DebugLevel0Fn("Playing new track\n");
+	  if (CDMode == CDModeAll) {
+	      PlayCDRom(CDModeAll);
+	  } else if (CDMode == CDModeRandom) {
+	      PlayCDRom(CDModeRandom);
+	  }
+      }
+#endif
+#if defined(USE_SDLCD)
     }
+    SDL_mutexV(cdromcheck_mutex);
 #endif
     return 0;
 }