Does anybody know a way I can record a 2 hour class lecture with my 2nd Gen 8 gig nano? Is there a microphone I can plug in and how would it record? I have class 4 days a week and ideally would like to come home each day with the audio and upload it to iTunes. It's completely legit to record the class, so now it's a matter of what hardware to use - especially hardware that can record the class clearly. Any insight would help.