Please could you post your findings with the Yam and the AE300, as I am in the same situation, as am currently using a Toshiba 520e dvd player, for both the lounge, and the HC (Ae300) room, which means I have to move it into the HC when i need to use it.
I am now looking to get a player to be set up with the projector permanately, and the Yam is on a shortlist of possibilities.
Cheers
Ricky