Sound in TGEA for XBox 360

Hi, One simple question. Why is disable all sound devices (DSound, FMOD and OpenAL) except NULL Device?

TGEA 360 does not support XAudio2?

Thanks!

Edit': XAudio2 code exist, but not included in the solution...

Edit'': Works fine with *.WAV. How create a SFXResource from WMA file?