There was some confusion regarding your other post in Gen. Hardware...mistakenly identified as spam, and it has been removed.
I've opened this one up again, but please don't post the same inquiry in two different forums in the future. Causes problems on where to post.
Now, back to your Yamaha MD8 recorder. It is a minidisc recorder I believe, according to this site: http://www.soundonsound.com/sos/apr98/articles/yamahamd8.html
So you are trying to purchase mindiscs for this machine? Where are you located?