Oh, OK
OK, since I was bein a smartass, and I actually understand your idea now, I'll reply seriously.
I mostly use CDs and harddrives, but I picked up a little Sony MD at a pawn shop for 50 bucks last year just to record live shows.
For me, I didn't really want to get into another format since I've got CD and MP3 players everywhere (my car, my ghetto blaster, all computers home and work, etc), but I decided that minidisk was smaller, and cheaper than DAT for bootlegs, and higher quality than tape (at least on low end handheld stuff you could smuggle into a show).
The only downside it that you've got to get the levels right for the mic you are using. I have a couple of shows that picked up some nasty digital distortion, where I would have been better off with tape- but for my personal uses, it's still better than nothing.
Now that I've got the MD player I sometimes use it for impromptu jams too where multitracking is too much setup, or just unnecessary. I was pretty surprized how skip-proof the little sony is for recording while bumping your way around a live show.
There is also a *whole forum* here on multi-track MD, with two whole thriving threads. It's almost as cool as the Echo ...err.... umm.... Vocal forum.
https://homerecording.com/bbs/forumdisplay.php?forumid=33
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-J