Recording LP's To CD
I have just purchased an imac Mountain Lion and wish to record some LP's to CD. When I had Windows XP, I was able to plug the record player into the Line In socket with a small jack plug and use the recording software ready to transfer to a CD. On the Mac, I only have a Headphone socket which does not do the job. I have read the 100 plus posts on the same subject and am now completely confused. For one thing, I keep seeing mention of using a USB connection but where does the plug come from? I should therefore be very greatful if someone could set out an ideots guide for me on how to achieve my aim. I had assumed I could use iTunes's or Garageband's software.
iMac, OS X Mountain Lion (10.8)