Exactly.
If it can be played through speakers then it can be recorded to another source. Sure, you might not be able to "RIP" it to an MP3, etc -- at least not at first -- someone will figure out how to do that.
Remember, DVD encryption was "uncrackable" as well :)
You don't have to get that archaic!! If you're playing digital audio or video, copy protected or no, at some point it has to go through a D/A converter or frame buffer....which means it has to exist somewhere for some trivial amount of time as raw digital data. As long as this is true, there will always be creative digital methods to "cleanse" protected data.
As one guy said back at an early IEEE1394 DV standards meeting "if you can see it or here it once, you can copy it many times!"