Let's Make Robots!

mic

USB for Mic jack

So a friend recently asked me if it would be possible to replace the USB jack on a set of headphones with a Mic jack so it could be plugged into and ipod. I said I wasn't sure. I know it isn't really robot related but it was an electronics question and I figured this was a good place to ask it. Thanks

Run away robot

I don't have a enough skill to do it, yet, but it would be cool for one of you to make a robot that runs away and hides.  I was thinking you could make it go to the darkest part of the room and wait until it hears sound coming to it (with several mics pointing in each direction) and run away from it.  Or just one that hears and runs away.