* MPX button to remove vocals on MPX cds. The RoxBox Karaoke Player will make your night more enjoyable with Auto Play, Auto Fade and the “Fastest Free Form” song search on the market! Features of the RoxBox Karaoke Player! * Singer History. The manual installation method is still available to you, should you need or desire it by following the instructions below. However before beginning there are a few important things to know. Installing Rockbox is generally a quick and easy procedure.