beets
Beets is the media library management system for obsessive-compulsive music geeks.
Project Source: https://github.com/sampsyo/beets
Project Homepage: http://beets.radbox.org/

cherrymusic
CherryMusic is a music streaming server based on CherryPy and jPlayer.
Project Source: https://github.com/devsnd/cherrymusic
Project Homepage: http://www.fomori.org/cherrymusic/

dejavu
Audio fingerprinting and recognition in Python.
Project Source: https://github.com/worldveil/dejavu
Project Homepage: http://willdrevo.com/fingerprinting-and-audio-recognition-with-python.html

headphones
Automatic music downloader for SABnzbd.
Project Source: https://github.com/rembo10/headphones

jasper-client
Client code for the Jasper voice computing platform. Jasper is an open source platform for developing always-on, voice-controlled applications.
Project Source: https://github.com/jasperproject/jasper-client
Project Homepage: http://jasperproject.github.io/

mopidy
Mopidy is a music server which can play music both from multiple sources, like your local hard drive, radio streams, and from Spotify and SoundCloud.
Project Source: https://github.com/mopidy/mopidy
Project Homepage: http://www.mopidy.com/

mps
Terminal based MP3 search, playback and download.
Project Source: https://github.com/np1/mps

shiva-server
A RESTful API to your music collection.
Project Source: https://github.com/tooxie/shiva-server
Project Documentation: https://pypi.python.org/pypi/shiva

Unofficial-Google-Music-API
A client library for an unofficial Google Music api.
Project Source: https://github.com/simon-weber/Unofficial-Google-Music-API
Project Documentation: http://unofficial-google-music-api.readthedocs.org/en/latest/

youku-lixian
Youku download script.
Project Source: https://github.com/iambus/youku-lixian

filtering-stft-and-laplace-transform
Simple demo of filtering signal with an LP filter and plotting its STFT and Laplace transform, in Python.
Project Source: https://github.com/guillaume-chevalier/filtering-stft-and-laplace-transform