No sound from Real Player

I have a fresh installation of SuSE 9.0 Personal. Everything seem to work "out of the box" exept Real Player. When trying to play something is goes "Cannot open the audio device. Another application may be using it". As far as I can tell I have no other audio applications open. Suggestions? -j PS: I installed Mandrake on this same machine, and here Real Player worked "out of the box". -- Janus Sandsgaard http://janus.dk