Headphone jack broken off inside Macbook--HELP!

My dad recently gave me his MacBook Pro, only problem is the audio is completely broken. This occurred when the computer was on the bed with headphones were plugged into the headphone port, and the dog jumped on the headphone jack, breaking it off inside of the computer.... The piece is totally irretrievable; it's broken off far inside of the headphone port. My father contacted the Apple store and I contacted Mac Mall, and they both said the same thing--it will have to be taken apart, and could cost up to $900 to fix!!!

This is a huge expense that I would like to avoid if possible..... my question is, is there any way to get around this problem? Is there any way I can get audio without having the computer taken apart to get the broken headphone piece out? Are there perhaps external speakers that work through the USB port? Or is there a way to change the settings so the computer doesn't acknowledge that there is something plugged in the headphone port? I really don't know! I'm totally desperate. Anything helps. Thanks!