Partially, only what the device manufacturer included as supported for that device. Note that MMW can auto-convert on sync (leaving originals on PC unchanged) any file types your device doesn't support to file types it does support.

Ok so those which Android sees fit to include? And for some reason m4a/m4b are not in that list I guess.

Currently MMA can only play songs with supplied codec from you phone. I think they are working on their own codec but not sure.

Is it possible?

I've some on my phone and MMA doesn't seem to know of their existence, even though they are in a folder it recognizes.

Nor does there seem to be anywhere in MMA settings etc for updating or adding codecs.

Little help ?