I recently won a copy of the rare 1986 Super Mario Bros. theatrically realeased anime movie. Only five or six copies are known to be in circulation, and I would like to get it out into the SMB/Nintendo fan community. The box says the tape is in Dolby surround sound, but my television only has stereo speakers. If I'm burning a copy to DVD, what do I need to do to keep the original sound mix intact?