Select Buy New Dances from the main menu to get new songs for Dance Central via Xbox LIVE Marketplace. Check back often for the latest downloadable tracks featuring unique routines and all-new choreography! To download new routines you must be connected to Xbox LIVE.
Please note that DLC is always forward-compatible but not backwards-compatible. So if you're still playing the original Dance Central, you'll need to upgrade to Dance Central 2 in order to buy any dlc released since the second game's release.