What is the most frictionless way to post a soundfile (preferably, but not necessarily MP3) as a status? The ultimate goal is that visitors (friends only) can listen to that sound directly within Facebook, without being redirected to another Facebook page or even away from Facebook and without having to accept a Facebook app accessing their Facebook data. Preferably it should just work like the embedded YouTube videos in a post.
I could of course just upload it to YouTube but that way I think I couldn't keep it private to my friends and streaming the extra video data would probably cause unnecessary traffic.
As an extra bonus, it would also be cool if it works (i.e. plays) within Android and iOS Facebook app.