RBZ Head Unit

[Cruizer]

Anyone have any tips or tricks with the RBZ touch screen radio? I have the manual but it sucks. Was curious how you add files to a playlist. It appears the only way is to upload an entire playlist because I don't see and add to playlist option. I also had an issue with an image I wanted to use to replace the stock background image. It was distorted beyond recognition on the screen but should have been fine.

Mine is the model without navigation. I just wanted to see if anyone had any tips for these things.