Karaoke Queue Manager is very handy for those that use Youtube. But it can be used for KaraFun as well. It basically maintains a queue without having an online catalog for singers to browse. This simple and straight forward tool is also handy for KJs that have multiple sources to pull from whether it's youtube, karafun, the thousands of songs in their computer to satisfy any singer. It also has a feature that forces singers to be in the club when submittng their songs by phone. It's called WiFi Constraint