You can't stop progress&mdash;especially at <A HREF="http://www.ti.com/">Texas Instruments</A>. The Dallas, TX&ndash;based technology giant has introduced a new two-channel digital audio amplifier chip with the world's best specifications.

<B>RODNEY CROWELL: <I>The Houston Kid</I></B><BR>Sugar Hill SUG-CD-1065A (HDCD). 2001. Rodney Crowell, Peter Coleman, Steuart Smith, Jim Dineen, prods.; Hank Williams, eng. AAD? TT: 47:01<BR>Performance <B>*****</B><BR>Sonics <B>****</B>

Savvy music fans willing to ignore the built-in copying restrictions on consumer-targeted CD recorders have always had their computer-based CD and DVD recorders and hard drives to play with, especially when it comes to manipulating MP3 files. Maybe not for much longer. A new content-protection approach is attempting to tighten the digital noose around the necks of PC users who have spent the last few years virtually unencumbered when it comes to&mdash;as Apple so succinctly <A HREF="http://www.apple.com/hardware/ads/ripmixburn.html">puts it</A>&mdash;rip, mix, burn.

As Shannon Dickson puts it, the <A HREF="http://www.stereophile.com//loudspeakerreviews/328/">Audio Artistry Beethoven loudspeaker system</A> "is a four-piece, bi-amplified, dynamic dipole design which has been taken to the <I>n</I>th degree of refinement." After much time spent reveling in the speaker's sonic splendor, Dickson arrives at his aural conclusion.

After enduring <A HREF="http://www.stereophile.com/news/10942/">frustrating delays</A>, <A HREF="http://www.xmradio.com">XM Satellite Radio</A> announced the successful launch last week of its first satellite, which the company has named Rock. XM reports that lift-off occurred off the Sea Launch Odyssey Launch Platform in the open waters of the Pacific Ocean on the equator, and that the first signals from the satellite were captured by a ground station in Australia a little over an hour later, as planned.

The prognosis was looking dim for yet another Internet music business, but last week the <A HREF="http://www.iuma.com/">Internet Underground Music Archive</A> (IUMA), revealed that it has signed an agreement to be acquired by Vitaminic, a European digital platform for the promotion and distribution of music over the Internet. IUMA had recently run out of cash and says that the acquisition will allow it to relaunch all suspended services within the week.

Tweaks can rear their pointy little heads in the most unexpected of places, as <I>Stereophile</I>'s inimitable Jonathan Scull discovered recently when he stubbed his toe. In <A HREF="http://www.stereophile.com//finetunes/325/">Fine Tunes #33</A>, J-10 reveals the floor screw tweak and many more.

There are a variety of ways to empty a large bucket of water: The entire contents can be quickly dumped in a dramatic rush, or a small hole can be punched in the bottom, allowing a smaller but continual flow over an extended period of time. Digital data can be seen as the water in the DVD "bucket," with 24/192 multi-channel sound being the equivalent of a big audio splash.