Pysync
From RpWiki

Synchronization program focused on mp3's with a artist/album structure.
Building/Running
You need the pyqt libraries additional to a python interpreter.
Linux
For debian based system:
aptitude install python-qt4 pyqt4-dev-tools cd into src dir pyuic4 pysync.ui > pysyncui.py python pysync.py
Windows
Get pyqt for windows from here. And a windows version of Python.
Source Code
git http viewer: pysync
git-clone git://oldsch00l.com/pysync.git
or
git-clone http://git.oldsch00l.com/pysync.git
if you are behind a firewall.