Emplode is the opposite, I can rename, add & delete playlists and sync them up, but I cannot drag & drop ANY files (.m3u, .mp3, .wav....)

That's very unusual. I don't see how that could be the case unless there was something extremely wrong with your Windows installation. If emplode itself works, I don't see why you shouldn't be able to drag files from Explorer onto it. That's strange.

Again, be more specific: Exactly where on the screen are you clicking and dragging from (including the name of the program you're dragging from if it's something other than Windows Exlporer). Exactly where on the screen are you clicking and dragging to? Exactly what is the file name that you are dragging? Exactly what happens when you do this? Is it simply that nothing new appears on the emplode screen or does it throw an error message?

Also, does the "Edit/New Tune" feature work, or is it just drags and drops that don't work?