David,

I also use 0013 to control the VSX-D608. When you say the "audio part", which functions do you mean? I think I have figured out the codes for most of the buttons on the remote. Actually, that's not completely true... I can NOT figure out which button controls the "Dolby" button on the remote. This is the button with the Dolby symbol on it, and cycles the reciever through all the Dolby, Dolby Surround, etc. modes. Maybe we can trade notes!

Jack