Pythonmongo is a project mainly written in Python, it's free.
Experiments with Python and MongoDB
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" >> /etc/apt/sources.list
apt-get update
apt-get install mongodb-10gen python-setuptools
easy_install pymongo
Indexes your (properly tagged) mp3s/oggs in Mongo. Probably useful for something.
./tagaliser.py -h