This doesnt look like regular xma stream, could be ea layer 3 or some other ea formats, EA games are usually hard to rip and use there own codecs for there 360 games and all.
i agree with OrangeC, seems to be an EA Layer 3 file but with a different scheme used by other EA format (mostly .SNG). As the EA Layer 3 is not yet supported, you know what to do with this file :P