also go check out the threads under specific brands of gear, there's a Fostex area and a lot of stuff spread around on the MR8. don't buy until you read it.
the time above is right, but the other thing about it is that you might want to convert tracks 7&8 to a wave file. you'll need extra room for that, it's not included in your 8 tracks of 3 1/2 mintues or whatever it comes out to b/c you're not really converting, but taking 7&8 and creating a new file. so you'll need a pc to remove/archive/backup whatever your card contents so you can safely delete a few tracks so you can have room on the card to create a new, big stereo wave file....