ok.. I got a tv / fm radio card today. It uses either usb or line in for sound, so I thought I was on the right road for working with RR.
On testing it works great both the tv and radio with the provided software, but I've tried the tv plugin for winamp but sadly cant seem to get any sound whatever I do. I also noticed the current version of the plugin crashs winamp.. the promising thing is that it looks like this tvplugin is being worked on, and that it will soon, if not already support the radio feature as well. This would be via the usb port rather than the mic/linein socket.. so sounds good, just will have to wait alittle.
The card I got was a Actionmate Pro made by compro I think