I am considering purchasing the MCA-66 and utilizing at least 1, possibly 2 Apple Airport Express' as inputs. This should allow me to wirelessly stream music off of any iDevice (iPhone, iPad, iPod) into the MCA-66. From the keypads I should be able to select either one of the Airport Express units to connect to and stream my music of choice into a Room/Zone. Doing it this way should eliminate the need for a PC or having to use the built in MP3 player and music selection/playlist/shuffling/etc is controlled directly from the iDevice. My only concern is the ability to custom label the Source. I would like to be able to name them something like AirPlay1, and AirPlay2. I realize I can use custom labels in Lync but it appears as though the MCA-66 has predefined source labels. I guess I could name my AirPort Express units so they mirror whatever source label I use on the MCA-66/keypad.
This setup should also allow me to have multiple iDevices streaming simultaneously into the MCA-66.
I also already have iRule Builder and iTach components in my house. I anticipate creating the appropriate screens in iRule to select a Zone, Source, Volume level. This should give me complete control of the HTD system via any iDevice as well.
This looks like a great system for the money.