Anne, i have to rave about my m-audio digital recorder. It is the size of a cell phone, though thicker. Can record mp3, wav and other formats. I use it to record a whole class, session, whatever is needed and the quality is excellent. I paid $299 several years ago, so I am sure that they are cheaper than the price on the m-audio website.
http://www.m-audio.com/index.php?do=products.family&ID=handheldRecorders