Is there music recording equipment that you can plug into your Mac?

My boyfriend's birthday is coming up and I'd love some help. He plays the guitar and is a songwriter, but only uses his iPhone or photo booth for the recordings.

Is there some sort of music device out there that would allow him to plug a guitar and a mic into his Mac and create a high quality mp3? He plays in a band with one other musician so if they could both plug in their guitars that would be amazing.

http://www.amazon.com/...00CBU7EII/ this would be a good starting out set up