Program received signal SIGSEGV, Segmentation fault.
0xb7cdb82a in Mix_VolumeChunk () from /usr/lib/libSDL_mixer-1.2.so.0
(gdb) bt
#0  0xb7cdb82a in Mix_VolumeChunk () from /usr/lib/libSDL_mixer-1.2.so.0
#1  0x080843ac in S_LoopSample (org=org@entry=0x8398dcc <cl+839020>, 
    sample=0x11ecacb0, relVolume=0.600000024, attenuation=2.79999995)
    at src/client/sound/s_mix.cpp:170
#2  0x08084c62 in S_Frame () at src/client/sound/s_main.cpp:112
#3  0x0805d9da in CL_Frame (now=172133, data=0x0)
    at src/client/cl_main.cpp:1121
#4  0x080fd43c in tick_timer (now=172133, data=0xdda3bd8)
    at src/common/common.cpp:1348
#5  0x080fe114 in Qcommon_Frame () at src/common/common.cpp:1526
#6  0x0804fe6d in main (argc=1, argv=0xbfffed34)
    at src/ports/linux/linux_main.cpp:55