Ditto here on minidisc! These are a great medium and hold up to 74 minutes in stereo. If you go mono you can double that time. The discs seem even more stable than CD-R's. Check out www.minidisco.com for recorder/players and blank mini-discs. Ebay is also a good source, just make sure you know what you are buying. I've used these before for live recordings with great sound. If you use a portable mixer then you can use your choice of mics, but a stereo mic and minidisc make a great combo that can be run from battery power alone. Cheers!

Kudzuman