"My initial goals for this software were to simply support streaming music in addition to music served by my computer. " --The RioPlay Home Page

So I'd say it's definitly possible. I'm not sure if creating a shoutcast stream is as simple as an output plugin in winamp, but it might be.

I personally want a windows sound driver that outputs to the empeg over the network. I've been toying with this idea for a while but I don't have any idea how to write windows drivers. If shoutcast/rioplay is easy enough, I might try that out though.

Matthew