Please contact the hearing office where your hearing was held.
I just had my hearing July 1st and received my results two days ago. I'm not sure if you can get a copy of your audio but I would think you have a right to it. I would go back to Tulare and O Streets and ask. They gave me a disk which included all paperwork and letters I received through the whole process before my hearing so I don't see why you couldn't get the audio now.
Thanks! Your answer is awaiting moderation.