The powerful single is off Sande's 2012 album, Our Version of Events.
The Oscar-winning actress claims the company owes her $700,000.
Martin's parents, Sybrina Fulton and Tracy Martin, will be presented with the donation.
The documentary will premiere on Showtime in October.
The comedian walked off stage prematurely during a tour stop in Hartford, Connecticut.
The R&B duo will release their upcoming album in October.