[K12OSN] sound in Rhythmbox only works for one user

[Petre Scheie]

I got Rhythmbox playing sound on the clients for one user (me, not as root), but when 
others try to play, say MP3 files, nothing happens when they click the Play button: no 
sound, the timer indicator doesn't move, etc.  Perhaps a permissions issue somewhere? 
It's not a permissions issue on the MP3 files because the users can play those just fine 
through xmms.  Does Rhythmbox need a special rc file or directory or some such in the 
users home directory which I might have but they're missing?

Petre