I have a 2010 level II and I'm thinking about a new audio system with a multi-disc player. I would prefer to have someone else do the work (because I'm afraid that I would screw it up). I don't want to break the bank either. Any suggestions?
Try to open PC PIII audio and Electronics sub-forum and you will find plenty ideas what to buy. Or search for the Headunit replacement or so.
What about adding a new head unit that does MP3, iPod and USB capability? No need to carry discs in your car then and you are less likely to have jamming problems which are very common on multi-disc players. Ideally you should be doing searches in the Audio & Electronics forum. There is plenty of information in there on replacing the head unit. If all you want is a CD changer unit then that is very straight forward and just about any audio shop can install one for $180-$300.