I registered Jaikoz (roughly) a year ago and have been enjoying it on a Mac a lot. In particular the connection to Discogs and the autotagging via Discogs ID is very helpful to me as I buy a lot of electronic music.
However, Discogs can be very slow with new releases. On the other hand, Beatport (www.beatport.com) is always on the edge with new electronic music and they have a very thorough tagging system including album covers, BPM (!) and Key/Tonality (!).
Is it possible to add Beatport as an additional tag source?
Beatport has an API described here: http://api.beatport.com/
Furthermore, some users of the Windows only tagger “MP3Tag” have released an open source script for the same program - maybe this could be of help?