Display changes while I'm using it

I use the Ipod dock in my new Prius. After pressing the audio button I have about 30 seconds to change the song before the display automatically changes back to the info screen. Even if I am selecting an artist or tracking forward to a better song, the audio page only gives me a 30 second window to do so. I think it should stay on screen while I am adjusting audio.

Is there a way to:
A. Prevent this from happening while I am using - so it only changes back 30 seconds after the last use?

B. Have the audio screen stay up and not automatically change back to info/map ever? I would much rather keep the radio options as the default screen unless I tell it otherwise.