[itsme]

That's why the "one file per song" part of my library has alfabetical subdirectories
\\com.zubersoft.mobilesheetspro\files\Songs\A\ ... ...\Z\
I do it like that from the beginning because I access my files every now and then using other tools. If the file list is too long other programs have similar problems.
Not easy to reorganise later, I know. Sorry if this info might not be very helpful in your case.