Is there a way to convert protected WMA ,DRM, and iMesh songs to MP3 for free?

I recently downloaded iMesh on to my computer and I downloaded songs and when I try to burn them to a cd or put them elsewhere, it tells me that it is protected. I need a FREE way to unprotect them so I can finally listen to my music elsewhere. If you give me a good, reliable, and free answer, I will give you 10 Points.