Hi,
You could also consider using the vArranger software, originally designed for the Ketron SD2.
You will be able to play natively Ketron styles + Yamaha Tyros 3/4 styles + Midifiles/Karaoke files + mp3 perfectely
From any midi keyboard.
Dan http://www.varranger.com/vforum/index.php/board,1.0.html