Comment 6 for bug 66483

I have the same problem (in wesnoth under edgy), but my soundcard is not intel, I believe. The same "fix" of setting volume to 100% works. I also believe this bug does not affect "sound effects", but only "music" in wesnoth, although I do not know what is the difference.

From lspci:
00:14.5 Multimedia audio controller: ATI Technologies Inc IXP SB400 AC'97 Audio Controller (rev 02)

From lsmod:
snd_pcm 84612 4 snd_atiixp_modem,snd_atiixp,snd_ac97_codec,snd_pcm_oss
snd 58372 9 snd_atiixp_modem,snd_atiixp,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer

So I think this is not restricted to intel soundcards. (I use a compaq presario V5000 series laptop, sempron cpu)