if you read this post
you will see that Sony Stalk support is coming, but not in 1.03 and probably not in 1.1 either (unless someone indicates otherwise).

But yes, thats one of the issues I guess the EMPEG folks have thought of. Sony users of the RMX4S have a couple of buttons they can press and hold - for about 2-3 seconds to indicate to the (Sony) head unit which way the stalk is mounted - hopefully the EMPEG Tuner module will also honour this or something like it so that the orientation can be configured easily without any requirement to edit configuration files.

Alternatively a couple of new menu entries may be added to the main EMPEG menus that allow the orientation to be set that way.

Greg