I have now put over a month into the PA4X - several hours daily - and have
auditioned styles from all sorts of Korg keyboards. Many of them I have saved in the USER area but did not organize them by type such as JAZZ, BALLROOM - ETC.. So now I have several hundred useful styles saved in the USER area and I don't know how to organize them so they can be found easily in the future.

Is there PC software that can do this task or must it be done on the keyboard?

Deane