It is similar to recording a message to someone Here is how to work the italki Voice message. There is a 1 minute limit. 1.When you decide to send a voice message, first click onto the orange voice message symbol next to the pink send symbol. 2.Then click onto the red dot. 3.Next you get a message saying "allow" or "cancel" . Press "allow". 4.Then you will see a 1 minute digital clock appear, so start speaking loudly. The clock will turn off by itself after 1 minute. 5.Next you will see the words encoding, just wait. 6.Then you will see a pink "send" sign. Press Send. 5. Go up to your messages afterwards and press the arrow, you can then hear yourself speak.

Yes you can do it. The following link has the instructions: http://blog.italki.com/2012/05/updates-make-voice-recordings-on-italki/

I have no idea, but when you find it out let me know, i'm also trying to do it.