Love the idea of "glicks" for play-list navigation (a la Opera 5)! (I think that's the "official" term for them - though I can't remember where I heard so I could be wrong!). Not sure how this could be done in practice though - as Windows only sends mouse movement messages to a window when the mouse cursor is within the confines of that window (and the window is active). Hence the glicks would have to be performed within the playlist window (or rather within any of winamp's windows), which could be tricky if the play-list is small.
<Pause for drinking of coffee>
Hold on ... come to think of it, it could be done with a system-wide hook looking at mouse specific messages (SetWindowsHookEx and the glick watcher routine in a DLL since it'd be a system wide hook).
<Pause for lighting of cigarette>
Hold on ... this could even be done in a plug-in ... I think. Just need to get the module handle of the DLL from within the plug-in's code, set the mouse hook, watch for glick movements and use messages or some other mechanism to control winamp.
Right - anybody got any really efficient algorithms for recognizing glicks when they occur? :)
Dave "dammit I need my stimulants".