[Zubersoft]

You can certainly do that, but if you don't disable "Let MobileSheets Manage my Files" under Settings->Storage, then MobileSheetsPro will still want to copy all of those files to the individual folders for each song. If you are just importing mp3s, then you can disable the "Copy Audio" option and MobileSheetsPro will use the audio files from the folder you've created.

Mike