Google Drive is beginning to be an alternative to Dropbox and other storage services as it provides 15 GB storage with a free personal account.
Once you have some files transferred into Google Drive, you can access those cloud files directly from within OnSong. To import, locate the Songs button in the upper left corner of the Menubar and tap to open the Songs Menu. Make sure that you have the Songs tab selected and that you are viewing All Songs or a book. Tap on the + button in the lower right corner to access the Add Songs Menu and then tap on the Google Drive option under the Import section.
The first time you access Google Drive, you'll need to sign in and authorize OnSong to access your Google Drive. Just use the credentials you set up when you signed up. Once authenticated, you'll need to allow access for OnSong to access your Google Drive contents. You won't need to do this again unless you sign out of Google Drive.
You can then browse files in Google Drive and place a checkmark next to the files you would like to import and then tap on the Import button in the upper right corner. Your files will then import and be visible in your Song List and the Song Viewer.
We've put together this tutorial video to show more about Google Drive: