NOISESUPPLY - Pandora for SoundCloud
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
20v - Create a custom music channel based on a single song
Tune My Music - Transfer Playlists Between Music Services
The Midi Shrine - A collection of MIDI files for SNES, NES, GameCube, Game Boy, and others.
Hermes - Pandora Client for OS X