I just could reproduce the mistake in a fresh install of 12.04 amd64:
The following transitions cause a pause: mp3->ogg
These do not: ogg->mp3
I thing bug https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/978604 deals with the same problem.
kde - player amarok has the same problem.
in syslog i find:
pulseaudio[1900]: [alsa-sink] ratelimit.c: 56 events suppressed pulseaudio[1900]: [alsa-sink] protocol-native.c: Failed to push data into queue
sound in 11.04 was ok.
I just could reproduce the mistake in a fresh install of 12.04 amd64:
The following transitions cause a pause:
mp3->ogg
These do not:
ogg->mp3
I thing bug https:/ /bugs.launchpad .net/ubuntu/ +source/ pulseaudio/ +bug/978604 deals with the same problem.
kde - player amarok has the same problem.
in syslog i find:
pulseaudio[1900]: [alsa-sink] ratelimit.c: 56 events suppressed
pulseaudio[1900]: [alsa-sink] protocol-native.c: Failed to push data into queue
sound in 11.04 was ok.