Any modifications you made are automatically saved when;
or
Any previous save state is moved up to become the "undo" state. This "undo" state can be recalled by actioning the "undo" context menu item, which appears in the Song mode's "GLob" page (the same page the device drops you in upon boot).
Please do not turn off your Woovebox when an auto save is scheduled. To force-save, simply press play. In the unlikely event a song is mid-save while power is lost, there is a small chance a song may get corrupted. You can recover the previous save state by using the "undo" state mechanic described above.
Auto-save can be turned off with a special boot mode (see boot modes).