Awesome app, quick question

[Norwood]

So I've got my device recognized on my laptop running Winamp.

I can create playlists and "send" them to my phone and listen to them.

Problem with that is...I already store music on my phone and don't want to upload something that's already there, or run out of space.

Is it possible to simply "tune in" to my laptop and listen to what's playing? Do the files actually need to be stored on the device?

Is the only other solution to Shoutcast from my laptop and listen to the shoutcast?