Dual-encoding works with all wrappers as well.
The situation is like this:
PhoneGap support is mature and can build native apps for iOS, Android, Blackberry, Windows Phone 7 and a couple others. However it's sometimes slow, because it uses the device browser.
CocoonJS and directCanvas are newer and still experimental, but sound should work on both. These also are much faster than PhoneGap (5-10x faster), but some features do not work because they do not directly use the device browser. They're still definitely worth checking out, though.