For the first time ever, Music Hack Day came to Denver. The event showcased the underappreciated developer community living in Denver and Boulder, Colorado. The presentations featured several live performances with instruments built during the event. Here are the projects that used the Rdio API:
New Release Roulette — Screenshot
Rebecca Easily select random tracks from new releases on Rdio. Fine tune the selected tracks by using data from The Echo Nest such as mood, energy, and danceability. The selected tracks are then added to your Rdio queue.
Rdio Comment Analysis — Source
Can't decide what if you should listen to an album? Don't want to read all of the comments? This application uses the AlchemyAPI to analyze the sentiment of comments of albums on Rdio. Gives you the overall sentiment and the sentiment of specific tracks.