Do you mean 'Music Finder'? ( which is a sort of a Song Book feature ) If so, then it can covert the Music finder files from Tyros to what is now called 'Playlist' on SX and Genos.
These models no longer have 'Music Finder' as did tyros and psrs
''Playlist' is something like the Korg system, which just happens to be called 'Songbook' - or were you thinking of that?
Music Finder is very limited, where Playlist is much better as it is based on Registration settings and is much for flexible.
When loaded to Genos/SX Music finder files from Tyros are each converted by Genos / SX to become an individual registration as part of a 'playlist' so you can then edit them and do a great deal more than standard MF files on Tyros, well as far as the Music Finder function was concerned .
Well I hope I got that sort of right !!
Keith