[Zubersoft]

Whether or not there is an advantage to doing that depends on the process you like to use to modify your library. If you'd prefer to create new songs in the library on your PC or make other modifications to the library, then yes, it probably makes sense for you to use MobileSheets on Windows to update your library then you can synchronize those changes to the other devices. If you don't mind making the changes on the tablets themselves, then you could just sync the devices to each other or utilize the cloud.

Mike