SAT Subject Test Language Listening- CD Player

Hello, I will be taking a subject test w/ listening this upcoming November. I was wondering, what kind of CD player is allowed and how exactly the listening section works.

Thank you!

http://professionals.collegeboard.com/testing/sat-subject/test-day/expect/cd

You play the CD and answer questions about the spoken dialogue. The listening section is 20 minutes long and is worth 1/3 of the overall score. The exam must be the first one on the day. You cannot replay parts of the CD.

Thank you!!