Do you currently use the songbook much?
If it is play files you are looking for, and you probably already know this, but make the entries in the songbook, and its instant retrieval, well almost instant!
Plus it also saves any current keyboard settings as well, including style volumes, mic settings, harmoniser setting, transpose setting (if any) etc etc.
What files are you having to search for?
Because you can link pretty much anything via the Songbook. And with its filter you can sort by a few different methods as well.
D