>>> add true native support for 6/8 (jigs).
There are RealTracks jigs already...
http://nn.pgmusic.com/pgfiles/audio/realtracksdemos/1813band.m4a

>>> Bonus points for 9/8 (slip jigs).

Already done.
http://nn.pgmusic.com/pgfiles/audio/realtracksdemos/1163band.m4a

More here...
http://www.pgmusic.com/realtracks.artists.php?a=61&os=win

(if you are referring to notation, then you are correct, the 9/8 styles are notated in 3/4 and the 6/8 are notated in 4/4. Hopefully that doesn't stop you entering all kinds of jigs and other Celtic tunes.)


Have Fun!
Peter Gannon
PG Music Inc.