Ticket #1381

I know at first we want to put all the audio in archive, but there will be a moment that you want to play a cd, the cd just arrives 3 minutes for starting the show, or take an own experience in mind. You can put the cd into a standalone cd player directly connected to the mixer this works. But if it's possible to have a function of playing a cd in gLiveSupport you can use the information like duration, time played, etc, etc you don't have with a standalone player. Let it be simple, so it's ok if i get only a second scratchpad and its functions. If we want to spend more time later on it's good to have a function to copy/import the track into the archive.