Gobbler: Specifying additional files to backup with project.

When using auto backup features in Sonar X3 with Gobbler, is there a way to include files not directly seen by Sonar as subjects to backup?

For example, I have a sample library folder from which I drag & drop .wav files directly into NI Battery. These samples are not backed up.
Another example would be text files with memos, lyrics, etc.. stored in the project folder.

Having a rough idea of the architecture, this is understandable so I have no intention to complain.

Just wondered if anyone knew of clever ways to get Sonar + Gobbler to manage and backup such files as well.