Nathan--
In no particular order:
--There are 11 bands, the pre-amp and the 10 MC EQ bands. Preamp first (furthest left) and each EQ band in its corresponding place.
--OOOOOOOOOOO (upper case letter "O") is flat, or unadjusted. Be sure not to enter all zeroes (that's how I learned they were O's).
--The scale is a rough percentage equivilent of the MC EQ adjustments, which were written in Spanglish. Have a look at the EQ.
--It will adjust S/PDIF out, as that's how I used it with MC 11. I output to analogue ATM. Fool with the mixer, best of luck.
--For your needs, load up a representative track out of your subset. Play it, and manually adjust the EQ to suit. When you're finished, skip to the next track (or wait for the track to end). EQdb will write to the EQ field the 11-digit code. You can then copy that code and paste it to the corresponding EQ field for the other tracks. You can then make micro-adjustments on each track, if you wish, either manually through the MC EQ, or by entering in changes to the 11-digit code.