I could create 8 different groups of Cd's and playback and shuffle one group at a time or shuffle one disc (tracks) or all disc's of all groups. Or I can program specific tracks of specific disc's.
I could also use my PC keyboard and plug it in to write Memos more quickly to identify the Cd's as I load them in the 300 slots.
Being a Sony, of course it will not decode DTS music disc. But I don't mind using the DVD player for those, because the intent is to play the entire DTS disc and not shuffle a bunch of them.