We all know that traditional radio and CDs are in decline. Even digital downloads are waning in popularity, giving way to music streaming options from an ever-growing roster of online services. All of which makes us wonder if on-demand music streaming is the Next Big Thing in music listening.

Cast your vote in this week’s HT Poll, and if you don’t see your favorite music service in the list below (we were shocked by how many we found) tell us about the one you like most in the Comments section.

How do you feel about converting existing 2D movies to 3D (assuming it's done well)? Is it worthwhile? If so, what movies would you like to see converted? Or do you think this is an abomination and all existing movies should be left alone?

Vote to see the results and leave a comment about your choice.

Anyone who owns a 120 or 240Hz LCD TV has seen frame interpolation at work, though they might not realize it. These TVs create new video frames and display them between the actual frames as depicted above to reduce motion blur. The problem is that this process has an unwanted side effect—it makes movies look like they were shot on video, just like soap operas. Most videophiles hate this "soap-opera effect" so much, they turn it off and live with more motion blur.

If you have a 120 or 240Hz LCD TV and aren't familiar with this effect, go into the TV's picture menu and turn frame interpolation on and off while watching a movie clip with some fast motion. (In most such TVs, it's on by default.) In many cases, this control is in a submenu called something like "Advanced," but don't be scared, you can't damage anything. Also, this control often has several settings like Low, Medium, and High; try them all and look for any differences.

The frame-interpolation function goes by different names in different brands; here are the names used by the biggest manufacturers:

• LG: TruMotion
• Samsung: Auto Motion Plus
• Sony: Motionflow
• Toshiba: ClearScan
• Vizio: Smooth Motion

Those who have seen frame interpolation at work usually have a strong opinion about it, so I ask you: Do you think frame interpolation is a godsend for reducing motion blur or the devil's spawn because of the dreaded soap-opera effect?

Vote to see the results and leave a comment about your choice; I look forward to reading your thoughts on this.

With the rise of iTunes, Netflix, and other online sources of streaming and downloadable audio/video content, many now predict that physical media such as CD, DVD, and Blu-ray will soon go the way of the dinosaurs. According to a recent story in the Los Angeles Times, sales of CDs and DVDs are down 57 and 33 percent, respectively, over the last four years, but Blu-ray disc sales have grown by almost 19,000 percent in the same time frame. Still, there are those who see Blu-ray as the last physical medium in the face of the online onslaught.

Others believe that physical media will never disappear altogether, in part because it's human nature to collect physical objects, and the sense of ownership is greater when you have something to hold in your hands. Additional factors in this argument include physical media's permanence—there's no chance of losing the data in a hard-disk crash—and generally superior sound and picture quality.

Which side of this argument are you on? Do you believe that the end of physical media is upon us, or will it survive the rise of online distribution, perhaps with the development of a future technology such as holographic crystals with terabytes of capacity? Or will it become a niche market as vinyl LPs are today?

Vote to see the results and leave a comment about your choice. Is your vote a real prediction or wishful thinking?

But I don't really know, so I'm asking you—is your flat-panel TV wall-mounted? If so, is it close to seated eye height, or do you have it mounted higher—say, above the fireplace? Did you do it yourself, or did you hire someone to do it? How did you hide the cables? Let us know in the comments.

Vote to see the results and leave a comment about your choice.

• Samsung spotlighted 85-, 95- and 110-inch 4K Ultra HDTVs in open tripod-like frames and said the 85-inch model will hit stores in March/April. Also see this report.
• LG showcased the 84-inch 4K Ultra HD TV that went on sale in late 2012 and revealed plans for 55- and 65-inch screen sizes later this year. OLED was also front and center in the form of a 55-inch set the company plans to deliver in March for $12,000; LG also demonstrated a curved OLED panel that’s said to deliver a more accurate image. Also see this report.
• Panasonic and Sony teamed up to produce OLED panels using a new printing technology. Both companies showed the only 4K OLED panels at the show.
• Sony announced plans to expand its 4K Ultra HD line this spring with 55- and 65-inch screen sizes that will join the 84-inch model announced last year and showed a 4K Ultra HD video player.
• Value-leader Vizio highlighted a 70-inch 4K Ultra HDTV that will be joined by 55- and 65-inch sets later in the year.
• Toshiba showed 58-, 65-, and 84-inch 4K Ultra HD TVs; all feature the proprietary Cevo upscaling engine and are slated for release this summer.
• Sharp unveiled two 4K Ultra HD TVs, featuring a proprietary ICC processor that is said to add depth to upconverted 1080p content; the sets are due out in later this year.
• Chinese TV maker Hisense announced five Ultra HD TVs with screen sizes ranging from 50 to 110 inches but didn’t reveal when the sets will be available or how much they will cost.

Now it's your turn to tell us what you found most exciting from CEDIA, whether you were there in person or followed our posts from the show. For this poll, I've listed a few of our favorite items, but of course, there was far more to pique the interest of any home-theater buff, so if your fave isn't here, click on "Other" and let us know what it is in the comments.

Vote to see the results and leave a comment about your choice.