Can't play recorded files?

I’ve bought a USB turntable and I’m trying to get my granddads vinyl into digital format. I’ve downloaded audacity and I believe it is recording. I can play back the recording using audacity. When I export as an mp3 and then open with iTunes and play back I’m getting no sound what so ever. Can some expert please help us. Thanks.

See this FAQ:


Also this set if tutorials should help you:

especially this one:

and this suggested workflow: