im curious how its gonna work out for me too!

im still undecided on the flows,
but as i envision it at the moment,
you go to a source, decide what you want to play,
then click on the zones button and activate each zone you want on.

the zones page will know you just came from "ipod" and activate that zone for ipod.
if you want more fine grain control of what zone is playing what, you can then go to the zones page and click the EQ Adjust icon to decide what is playing in that zone (in the case you want something else playing)

still seems somewhat complicated,
but really its somewhat similar to sonos.

still working on it.

i really need the hardware in hand (sonance amp mainly)
so i can work on the switching and see how it responds in real life scenarios.