I'm looking for a way to level my mp3 library, using a software
solution as opposed to an external hardware solution. Of course I
could install a dbx unit or something like it, but I think a software
app might be less expensive.

It would have to intercept the audio "out" of the mp3 player, and
before the Windows sound mixer. I don't want to switch to a different
mp3 player (I know that Media Jukebox has this function built in),
because installing an app like this would be much simpler and faster
than re-importing all my mp3s and playlists into a new player.

Does such a thing exist?

Thanks,
Angelo