I heard my daughter and some friends singing and stuff over the weekend and I noticed they were using the PlayBook. I asked some info and found out that KaraokeParty.com works great on the PlayBook. One thing you do need to use is headphones because the music playing will be picked up by the microphone and throw off the scoring results.
Keep in mind this is web based so it does require a wifi connection and I did not see if it worked via the bridge browser, but I do not see why not.
Karaokeparty is a music service that let users sing karaoke, practice singing and challenge friends. All that is needed is a microphone and a computer connected to the Internet.
All music on this site are cover versions made by professional muscians and not the original artist.
Anyone can join
Karaokeparty is open for anyone and registration is voluntary.