You can't play it in public or on the radio, make new copies, even for personal use, or even use any piece of it for any new work at all, regardless of whether it's commercially available or not. You have merely purchased the rights to listen to that music in private as many times as you'd like, until "your" copy wears out.

You know, it used to be you couldn't hear music unless someone played it for you...

I swear, modern humans think they're entitled to anything they want.