No, apart from it's time/date amnesia, the player worked flawlessly.
However I must admit that it too has locked up once or twice, but I blamed that on the nature of the beta software. My remote has never stopped functioning.
I can't say anything about the aux source switching since I don't have anything connected to the aux port and therefor have never had the need to switch to it.
I don't have Hijack running -yet- (I really must install that one of these days)