I can confirm this too on a clean install of 12.04 64-bit. My music collection is a mix of ogg (about 40%) and mp3 (the rest) and I see this message in syslog at the time the music stops:
May 12 11:52:07 triton pulseaudio[3004]: [alsa-sink] protocol-native.c: Failed to push data into queue
And I'm using banshee and not rhythmbox so I doubt this issue is related to some bug in the player itself.
I can confirm this too on a clean install of 12.04 64-bit. My music collection is a mix of ogg (about 40%) and mp3 (the rest) and I see this message in syslog at the time the music stops:
May 12 11:52:07 triton pulseaudio[3004]: [alsa-sink] protocol-native.c: Failed to push data into queue
And I'm using banshee and not rhythmbox so I doubt this issue is related to some bug in the player itself.