So I happened to receive somewhere between 200 and 300 cassettes from this woman who didn't need them anymore. I believe they are 60 minute tapes but i want to cut them down to 30 minute tapes so that they are easier to listen to (I plan to release demos on them and give them to people). Is there a way I can make the deck stop playing at a certain point automatically so that it will only play 1 side for 30 minutes?