I took a PI3 unit home the weekend, got kodi on it, once my air ships I'll plug it into the aux in and compare both interfaces. I'' assuming the Air's Pi unit is hardwired in...you know so when version 4 comes out we can't simply unplug the old one and in with the new.

2xAA
M80/VP150/VP160/QS8
4xM3/M22OW/M2OW/VP150OW/4xM3IC/4xM3OW
EP500/800/HSU VTF3/SVS PB2k/SB2k/SB-12