A few weeks ago there was a discussion on Minidisc use for bird recording
and playback. There is a good thread running on minidisc use on the
Neotropical Ornithology listserv. Its archive on birdingonthe.net is at:
http://www.birdingonthe.net/mailinglists/NEOO.html

(It appears that quite a few professionsl ornithologists use minidisc).

Charles E. Swift
Moscow, ID, USA
charless at moscow.com