Just some google food for anyone having trouble with the music in PrBoom on amd64 systems. There is a bug in SDL_mixer 1.2.6 (and earlier), which causes this problem; this is the version of SDL_mixer in Ubuntu Hoary and Dapper, and in Debian at the moment. It is this patch:
--- ./timidity/config.h 2006-08-12 11:59:44.492723500 +0100 +++ ../sdl-mixer1.2-1.2.6-cph1/timidity/config.h 2006-08-12 11:30:06.988427250 +0100 @@ -185,14 +185,8 @@ typedef double FLOAT_T; #define LITTLE_ENDIAN #endif -/* DEC MMS has 64 bit long words */ -#ifdef DEC typedef unsigned int uint32; -typedef int int32; -#else -typedef unsigned long uint32; -typedef long int32; -#endif +typedef int int32; typedef unsigned short uint16; typedef short int16; typedef unsigned char uint8;
to the timidity code that fixes the problem. You can download a fixed libsdl-mixer1.2 and libsdl-mixer1.2-dev if you don't want to rebuild the packages yourself.