Shameless bump for a new feature I'm rather proud of.
When you share your Instaudio audio on Facebook, it now shows up in an embedded player, so you can play the audio right in the Facebook feed.
This will undoubtedly make sure more of your friends actually listen to what you're sharing, since they don't need to leave Facebook to do it.
This took installing the Adobe Flash trial and learning some basic ActionScript to fight through it. Then I spent a good wad of cash on an SSL certificate so it'll work when you're using Facebook under https://.