I have a question. Typically, I never use the library, rather I just drag and drop m3u playlists into WMP and they stay there in the playlist list. THen I can just listen to any song by picking a playlist (in my case, each playlist is an album).

I installed WMP11 and all was fine until recently, for some reason, I can no longer drag a m3u file from explorer and drop it into WMP11. ANy idea why this has suddenly changed?