What source is the cd from, mp3 or lossless

Can somebody tell me how i can find out if my cd comes from a mp3 source or not?

I use Exact Audio Copy (EAC).

Here's a website with more info on checking for mp3-sourced material:
http://www.audiohub.org/get/fa/fa.htm

When looking at a spectral analysis, it's pretty easy to tell.

Nice tip guys, hadn't even thought of that! But then, most people who upload on here don't lie about their content!

Peace,
Adam.

Thanks for your tip, i will check them out for sure!