Those of you out there that have a listening center- what type do you have (tape, cd, other) and what do you like about it? I would like to purchase one for my classroom but I'm wondering about the pros and cons. Ideally I would like to be able to record books and other readings, possible using the same piece of equipment. I would also like to have something that is cost efficient since the listening library will be continuously expanding. What else should I take into consideration with this purchase? Thanks for your help!