[CentOS] Safe to use gstreamer repository for RH or Fedora? [SOLVED]

[Dave Gutteridge]

> 
> In .asoundrc, find the line in pcm.dmixer that says hw:0,0 and change
> the first 0 to a 1 or 2, then go into ctl.dmixer and change the number
> after card to the same value.

That's done it! I changed the 0 to a 1 in both places, and now I'm
sailing.

Thanks everyone for the great advice. Every step was very clear and
helpful.

Dave