The description of UltraStar Mac OS X - Play With New Friends
UltraStar Mac OS X is a perfect clone of the Playstation karaoke game called SingStar. You oonly need a microphone and your artistic skills to win the game.
The goal of the game is to imitate the vioice tone of the singer to win the more points as possible. Depending on your results, the program will set you in a different singer category.
Search for the songs on any P2P client. They are free and developed by the active community of UltraStar gamers. Once you download them, just copy them into the folder songs and start singing.