[Zubersoft]

I will look into this, but that would point to an issue with the companion app. In the meantime, you may just want to add the audio files from the device running MobileSheets itself instead of using the companion app. If you upload the audio files to the cloud (Dropbox, Google Drive, OneDrive, etc), then it should be quite easy to add the audio to your existing songs. It should actually take less time than using the companion app.

Mike