audio gone since upgrade to F8

[Huub]

Hi,

I recently upgraded from FC6 to F8 and find my audio is gone. The 
speaker symbol is still there but has a cross through it. Any option to 
manage sound is gone as well.
lspci gives this for audio, so I know it's there:

00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb 
AC'97 Audio Controller (rev a1)

Anyone a clue on how to solve it?

Thanks.