Ron, I know this reply is probably coming late, but I felt that you never received the answer you were looking for regarding the Vintage '74 auto pan...

One obvious way is to connect the audio outputs of your MX49 to an audio interface connected to your PC.

I've been waiting for a response to this issue from Yamaha since May 2017, and I am still waiting. I don't believe that they have really looked into ...

Thank you very much for the reply. I know that this must seem like an unusual question, but I do have a good reason for trying to find a combination ...