[Zubersoft]

There is only one option at the moment to link to files which are not managed by MobileSheets. You can place a smart button on one of the pages of your song, then link that smart button to the finale file. If the button is clicked, it will attempt to open the file in whatever application is installed to handle that file type. Give this a try and see if it will meet your needs. Just be aware that the finale files themselves will not be managed by MobileSheets, meaning they won't be included in library backups or synchronized across when using the library sync feature. You will have to handle those files yourself.

Mike