Hi. New user, just started using Linux and wanted an alternative to virtualdj. I’ve loaded a track to test it, and I can’t hear anything. Ok, I thought, check the preferences to see if the audio output is set up. Only problem is, no matter how many times I try and select the Preferences I can’t see anything. When I exit, I get a message to say the Pref. window is still open, but where???!!! What am I doing wrong?