Thanks Henni for the songfinder, I've been looking for something like this for a long time.
You will need to copy the files to your Registration/Single folder. Don't forget to make a backup of the files you have there.
I don't know a way to find the name of the style being used in the songbook files. It appears to be a midi style from a different keyboard (yamaha?).
What I did find is that he database is very similar to the Musicfinder File Manager over on the Yamaha forum for Tyros.
I compare the style of the Audya Musicfinder, then look in the Musicfinder File Manager for the name of the style.
I can then go to the Audya styles and find a similar one since the names are somewhat similar.
This has been very useful.
Thanks