Version:           1.1.1 (using KDE KDE 3.2.3)
Installed from:    Slackware Packages
Compiler:          gcc 3.3.4 
OS:                Linux

Any possibility of a plugin for mp3 players?

This is a ridiculously simple addition that would be a really nice option for those of us with mp3 players.... :)  I'd go ahead and do it myself, but I know there are much better coders than I who can do it much more cleanly.

Wishlist:

--mp3 player could appear as a tab on the left.
--Mount/unmount, either via /etc/fstab, or use command given in config.  Popup a password dialog if required.
--Drag-and-drop files from playlist.
--Give error message if capacity exceeded, or perhaps just ghost out the add feature if the device is full.
--Capacity should autodetect.
--Mount point can be set in config.
--"Add to mp3 player" in right-click context menu.

And for a bonus point:

--Allow directory structure options: all in root, 1-deep by album, 1-deep by genre, 1-deep by artist, arbitrarily deep.