*sigh* No-one has any need to do so. There are .xm downloads for all the org music in CS on the tribute site, and the org2xm converter if you want to convert your own. There are more than enough music players for android that can play music in .xm format.
Cave Story Tribute Site Forums
andwhyisit
q3hardcore
It's definitely possible. If you have Flash, you could probably just use the Flash version.
Jade
Why not an Orgmaker for android?