"I get nothing from rhythmbox."
System -> Preferences -> Sound
and select the proper thing.
I presume, you have now ALSA with ESound.
Or, do you have OSS4?
In any case, Rhythmbox goes to system defaults.
Type on Terminal
and tell what you have there.
If you have OSS4 installed, see Martin's screenshotshttp://martinbaselier.wordpress.com/
Could you please tel exactly what you did and what sound system you have now?
Otherwise, it might be difficut to help you.
In a word, if you compiled OSS4 (or installed it from deb),
you may need to remove one gstreamer plugin for pulse.