Mark,

The string has got nothing to do with Visuals, I just randomly picked the Visual button on the Handheld remote to map to for the debug test. In the car the string is mapped to one of my Sony Stalk buttons, but as I was using the serial port on my desk I didn't have the tuner or stalk connected.

The string inserts a specific playlist into the current playlist after the current track. I find it really useful as I have the Empeg playing all tracks shuffled randomly most of the time but then have a "current favourites" playlist which I can then insert at the press of button.

I will have another go tomorrow and see if I was missing any data.