I tried that but it seems to cycle kind of awkwardly. It sometimes zips very quickly past tuner to player, and sometimes it will stick on Aux for more than a second.
Im not "complaining" as jwtadmin suggest, merely posing a query.
I want to switch from tuner back to player during radio commercials on my commute, but without taking my eyes off the road, lest one of my fellow bostonians try and drive me into a guardrail.

Z~