How can I use a Windows-formatted CD-Rom on my Mac?

My Dutch language class involves a couple hours a week of homework to be done from a CD (listening, reading comprehension, etc). It is apparently a Windows-only disc. When I put it into my Macbook, I can open it as a folder but it’s full of files I can’t use.

I guess I need a modulator (or whatever the proper term is), but I’m not particularly willing to pay money for this program. Can anyone recommend a free/shareware method that I can use?

Thank you very much in advance / Alvast bedankt.