kdulcimer

I need to record music during workshops. I'm currently using a cassette recorder, but then going back and finding the right song after 2 days of one-hour workshop is a major pain. And the sound quality is awful. I'm thinking and MD is the answer, but don't know anything about them, so I have a few questions: 1) It needs to be pretty portable - do I need to carry an additional mic? 2) Can I play it back right on the recorder? 3) Can I create tracks while I record, or do I have to wait until I get back to my pc? 4) If I stop it after recording a song, then turn it off, when I turn it back on, will I be at the next "spot"? Thanks!