grab a copy of
mixed in key if youve got the spare cash. Otherwise get
rapid evolution 3. I used version 2 of the software and that keyed up my songsw to the camelot notation pretty easily.
Does serato read the KEY ID3 tag on MP3's or are you going to put the data in the comments field?
Either way, you can set this in the preferences of either software. Simply plop all your tracks in there and leave it going over night.
What made you switch from traktor to serato btw? Were you using traktor scratch before, or was the move to get you onto dvs?