[Bloody Sam Roberts]

But, what about audio? If I'm not mistaken, the only way to really close the analog hole for audio is to build a new type of digital speaker…. one that has the digital rights management technology built right into the cones.

Not likely. A speaker is, at it's most basic, nothing more than a DC motor. A coil receives pulses of current...positive and negative...that move the cones in the appropriate direction. There is not and never will be anything digital about it.
Unless a completely new type of speaker is designed with a DRM processing gateway in it to allow or disallow DC current to flow to the coil. And that's just plain old stupid.
But since Congress is involved.....hmmmm. Stupid sounds about right.

[unseen]

but if the speakers are wireless...hmmmm those could be problem. But regardless if speakers can or can't be made to follow this law, the law itself is a flawed piece of crap. I remember the Republican running on the concept of free enterprise and deregulation. This law is nothing short of regulating the entire electronic industry. This would stifle innovation, create monopolies due to the studios and RIAA license agreements that would need to be made, increase the average cost of all electronic equipment to the consumer, stifle debate in society, close numerous avenues of learning etc etc all so that a couple of Congressman can continue to receive campaign contributions (.i.e. bribes) I hope people throw the bums out both Democrats and Republicans come Nov.