The only things left to consider before Apple repair are USB audio and Bluetooth audio. I got a Syba "usb audio card", which is a little dongle that goes in the USB port and supplies headphone & microphone jacks, off Amazon for $8 shipped, and it's been great. Well, except it is a bit wide and blocks the adjacent port, so I also got a 6-inch usb cable off eBay for $4 shipped. Probably for more $$ you could get a Bluetooth audio reciever or headset, and ditch the connection entirely. Good luck.