This thread has a lot of useful information:
http://www.ft86club.com/forums/showthread.php?t=35778
From what I am understanding is you activate the A/V settings in your BeSpoke which gives you RCA connections. Using an Android stick (HDMI connection) you can use a HDMI -> RCA convertor box and power it using a fuse or wire -> RCA connections and connect it to your HU. Or if you want to do MHL mirroring on your phone use an MHL adapter (mini usb to HDMI) then to the convertor.