(gdb) bt
#0  0xb7e39586 in poll () from /lib/libc.so.6
#1  0xb7f4679f in snd1_pcm_wait_nocheck (pcm=0x9d33e30, timeout=-1) at pcm.c:2360
#2  0xb7f46944 in snd_pcm_wait (pcm=0x1, timeout=-1) at pcm.c:2329
#3  0xb7f46b25 in snd1_pcm_write_areas (pcm=0x9d33e30, areas=0xbffe49f0, offset=0, size=5510, func=0xb7f52a80 <snd_pcm_mmap_write_areas>) at pcm.c:6644
#4  0xb7f52d8e in snd_pcm_mmap_writei (pcm=0x9d33e30, buffer=0x9d55f2c, size=5510) at pcm_mmap.c:186
#5  0xb7f412d4 in snd_pcm_writei (pcm=0x9d34220, buffer=0x9d55f2c, size=1) at pcm_local.h:516
#6  0x0804d4e3 in pcm_write (data=0x9d55f2c "!\003\002\002\002\002\002\025\003\002\230\002\235\002\002\235\002\002\002\035\0037\0034\003\005\003\002\030\003)\003<\003l\003\003\003\235\003\003\003r\003S\003|\003\003\003\003\0030\004G\004%\004?\004\004\004\004\232\004\004\004\004\004\004\177\004:\004\035\004(\004-\004\f\004\003\217\003\237\003\003s\003R\003P\003<\0037\003y\003\177\003\030\003\002\002\002\002\002\002\002|\002\002\002\002\002\212\002v\002\002\002\002\002u\003\003`\003\031\003\016\003\021\003\002\002\201\002L\0028\002a\002\201\002T\0028\002T\002"..., count=5510) at aplay.c:1432
#7  0x0804dc27 in playback_go (fd=3, loaded=0, count=8986624, rtype=2, name=0xbffe6a84 "Guitbox N Glasses.wav") at aplay.c:2171
#8  0x0804f0b9 in playback (name=0xbffe6a84 "Guitbox N Glasses.wav") at aplay.c:2231
#9  0x080514f1 in main (argc=3, argv=0xbffe4d44) at aplay.c:641
(gdb)