Maybe I don't understand, nestawasright. If WinAmp "connected" to the netTunes server, it'd have to understand how to do so... and how to display the remote copy of iTunes. netTunes doesn't "serve" the music itself...
Perhaps what you're looking for is the ability for WinAmp to support DAAP, the iTunes streaming music protocol... that'd definitely be something for the WinAmp engineering team to take a look at. There's not much I can do without replacing it.
Or, you could just use iTunes for Windows.