Markb,
I only used WinAmp to edit a playlist after EAC choked on a track or two and I had to re-rip that one track from another CD-ROM drive which caused EAC's automatic playlist generation to create a new playlist with only the re-ripped tracks. When I did edit the playlist, I saved it back to the same album name.
I have not used the WinAmp media library to create the playlists.
BTW, is there a way to batch import a bunch of playlists into the WinAmp media library like you can with WMP9 and ARM?
Bill