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So, you finally got that shiny new iPod for Christmas.  How will you fill it up? After ripping your CD collection (I recommend CDex), you'll want some new music.  Don't have any cash left but want some new tunes?  Don't worry - there are plenty of good ways to download MP3s for free without getting a nasty letter from the RIAA. Below are ten of my favorite ways to get free MP3s legally on the web: 1)  Salon.com's Audiofile. It helps to be a Salon member, but you can usually get a day pass by watching a commercial.  Audiofile is a music blog that writes a little about each tune and usually includes a direct download or a link to where you can download a track.  The music selection is pretty eclectic, and I find that even if I don't recognize any of the bands being covered I can usually catch a reference or comparison to something I have heard before.  If you have to time, go through the archives and just download everything and toss what you don't like later. 2)  Amazon.com's Free Downloads section is chock full of MP3s. For a long time, this was the best-kept secret on the web in terms of free music downloads, with hits by Yo La Tengo, the Hives, Sleater-Kinney, among many others.  It's a little hard to find, and to tell you the truth I'm sort of surprised they haven't removed it. ...maybe I spoke too soon.  It looks like their download landing page has been trimmed down to almost nothing.  I guess they are opening up an MP3 store soon.  Luckily their free MP3 search still works, and there are some good listmania lists to peruse. 3)  Music blogs like Hobby Box on The Larry Page.  There are a lot of passionate listeners out there writing about what they're hearing, and The Larry Page is a good example.  Some cover specific genres, while others just follow the writer's wandering tastes.  Many of them provide links back to band home pages and record label home pages with free promotional downloads. 4)  The Creative Commons CD was included in the November 2004 issue of Wired Magazine, but it is still available for download. You'll find pretty decent tracks from the Beastie Boys, David Byrne, Danger Mouse (of Gorillaz and Gnarls Barkley fame), Le Tigre and others. 5)  The Last.fm Weekly Free Downloads page.  Last.fm (formerly Audioscrobbler) is a great site that tracks what people are actually listening to.  Install their plugin into iTunes, WinAmp, Windows Media Player, or another player and the site will keep track of your favorite songs and musicians and make recommendations based on what others are listening to. The free downloads page is a relatively new feature, but there's already a huge list with some surprisingly well-known bands. 6)  The cover song sections at Soundclick.  I don't mean to imply that the only music worth listening to is something you can find on the radio, but it can be very hard to sift through  the thousands of unknown artists on sites like Soundclick.  One of my favorite techniques is to look for a cover of a song I know and then grab the rest of that band's stuff if it sounds interesting.  For example, here's the Super Mario theme in acoustic guitar. 7)  If you are feeling adventurous, there are many, many more places to check out that have independent music, garage bands, and other homebrew stuff. CNET has thousands of tracks but the quality can be uneven at best. 8) There's a ton of stuff from the South by Southwest music festival in Austin.  You can even download all 700 MP3s in one giant bittorrent. 9)  Netlabels at the Internet Archive.  There is a lot here, and it can be hard to find something you'll really like, but I have heard some worthwhile stuff here in the past.  Take a look at the staff picks, the items with high ratings, and the songs with high "batting averages." 10)  Legaltorrents lists a ton of legal-to-download, public domain files including MP3s and other music.  You never know what you will find here, but it's worth checking out. I like to find stuff that is interesting and new, but I can never seem to get deep enough into a particular genre to listen to bands "no one has heard of," and the list above reflects that.  You can always look for more free music on blogs that cover your favorite genre, band home pages, and MySpace. Do you know a site I left out?  Please let me know in the comments section below.

I'm always on the lookout for ways to make my house more energy-efficient. I'm also always buying things online and having them shipped to my house. This leads to a problem - a bevy of boxes, and a plethora of packing peanuts. Boxes can be broken down, folded up, and recycled. What to do about the packing peanuts? Could I kill two birds with one stone, and use them as fill to insulate my attic? The answer is probably not. I trolled around the web looking for someone esle with the same crazy idea and came up relatively short handed. One point I picked up pretty quickly is that they are not really Styrofoam packing peanuts, the are Polystyrene foam. Styrofoam is a trademark that refers to a specific product, and were talking about the wild multicolored mass of packing material I have at my disposal. One blogger confessed he has always had an urge to eat them. I'm not sure how that helps me, but there it is. In an article saying they can be broken down into biodegradable materials, one of the people commenting on his post wondered the same thing I did, but there were no answers. At Ask a Scientist, a web site of the U.S. Department of Energy, a kindred spirit asked about the R-value of packing peanuts and styrofoam, and here I got my most definitive answer:

As a professional civil engineer, I recommend against using packing foam for building purposes in the strongest possible way. This is a DANGEROUS idea. Foam panels sold for insulating buildings are treated with flame retardants while it is likely that foam peanuts are not. Untreated Polystyrene foam is dangerously flammable and produces highly toxic fumes.

So there you have it. I still say "probably not," because the main problem is flammability and it's possible there's an inexpensive flame retardant that could be used. But just dumping them into cheap garbage bags and laying them in the rafters looks like a bad idea. Still, it's not like using polystyrene is unheard of in the building industry. For example, I have found instructions for using peanuts in green roof construction, usually bagged into batts or pillows. Thermasave building panels are made of polystyrene foam sandwiched between two (presumably flame-retardant) concrete boards. At least one interior designer (so, not quite a civil engineer) recommends using the peanuts to insulate basement windows. Many do-it-yourselfers recycle them into projects such as solar water heaters. Of course, those biodegradable packing peanuts made from corn starch are fairly common these days. If I ever have to buy any peanuts, I'll definitely get those, and still save the world on packing peanut at a time. But right now I still have a ton of non-degradable peanuts to deal with. There's a company in England turning them into pencils, rulers, and other school supplies, but they are too far away. I've only found a few other reuse ideas. So my best bets are to keep them around in case I have to do a lot of shipping (though now I'm worried about the fire hazard), or take them to a shipping company like Mailboxes, Etc (now the UPS Store) so that other people can reuse them. I'm not likely to be sending a lot of materials that require packing peanuts for shipping any time soon, so I guess I'll go with the latter. Maybe I'll help someone avoid getting fired.

What do you do When you find out you are wrong? Not just wrong about one thing, or a little bit wrong. What do you do when you find out you are very wrong, and consistently wrong, and there are really big consequences? President Bush, after three years, seems to finally realize he has been wrong. Well, not really. But he has finally acknowledged the big consequences part. Part of the problem has been that he has only gotten advice from those willing to tell him what he wants to hear. So the formation of the Iraq Study Group was a good thing, right? Finally, some independent experts would weight in, and tell the President some things he wouldn't like to hear. Except they weren't really experts. And their advice has little to do with Iraq. And Bush isn't really listening anyway. So how do we win the war in Iraq? Maybe, just maybe, it wouldn't hurt to ask the real experts - the military people actually in Iraq. In fact, one of our troops has given us a PowerPoint presentation. That's right, it's even in the preferred format of upper management everywhere. Seriously, go there right now and watch the presentation, it's only 18 slides. It's a revelation. Not because this one soldier, Capt. Travis Patriquin, is a military genius, or that his ideas are a silver bullet that will magically solve all problems. It's amazing because Patriquin's presentation actually talks about the reality on the ground. He presents actual ideas, grounded in reality, that could actually be tried. This is a amazing. Think about it - this administration has spent years propping up non-ideas (like staying the course) as if they were ideas. They have spent more time and effort denying reality than dealing with it. I had almost forgotten what ideas taste like. It has been so long. Unfortunately, this presentation is the last insight we will get from Capt. Patriquin. He was killed last week. His "How to Win the War in Al Anbar" may go down in history as the first PowerPoint presentation to make a positive change in the world. Or maybe it will be ignored. Past performance is no guarantee of future results, but based on 6 years of the Bush administration, my guess is it will be the latter. You know what this reminds me of? This reminds me of every large company or organization I've ever worked for or dealt with. The people at the top are so disconnected from the people at the bottom that they begin to congratulate themselves for the disconnect. "I don't need to know how widget X works, in fact I shouldn't know at all. I need to think about strategic business decisions." We don't want to waste the chief executive's time with tactics, he has strategy to strategize about. We can lay off engineers, they just have domain knowledge, they don't contribute to the bottom line like sales. We need programmers with 5 years of Java and J2EE, don't worry about anything else, it's just business logic. We can outsource our call centers to India or Kansas or where ever - all they need is a script to work from, hire a consultant to develop the script. We need professional project managers, certified experts in the art of scheduling and tracking--they don't have to understand the project they're managing, what are you daft? Tactics matter. Actual information that reflects reality matters. They say it's not what you know, but who you know. That might be true in job hunting and getting political appointments, but apparently it doesn't win wars.

So, do you believe in God?  This video will tell you why you shouldn't.  Watch it.  Or don't. But if you don't, Santa will know.  He knows who is naughty and who is nice. [youtube]GxA8_NIxQZc[/youtube]

Running into strange WordPress performance problems and database errors?  Akismet could be the culprit, but we're in luck, it's an easy fix. Earlier I wrote a bit about our encounter with vicious, robotic Chinese comment spammers.  Since then we've had a few further issues, and I think I've found the culprit - Akismet, the plugin we've been using to fight the spam. First off, let me say that I think Akismet is a great plugin.  While we had hundreds of spams come in for a few days in a row, not one made it out to the public.  Very nice.  But it is a bit too aggressive in one spot, and that can slow down your blog or lock up the comment table, filling your max_connections. The problem is in akismet.php, specifically the akismet_delete_old() function.  Look for the following lines:

$n = mt_rand(1, 5); if ( $n % 5 ) $wpdb->query("OPTIMIZE TABLE $wpdb->comments");

Those of you with PHP / MySQL experience will recognize the problem immediately.  For the less code-literate, this is creating a random number between 1 and 5, and if the number has a remainder after being divided by 5, it runs and OPTIMIZE TABLE on the comments table.  That means that at random, it will lock the entire table and compute statistics after 80% off all deletes. Now, it's a good idea to optimize your tables after a large number of deletes.  But it is a pretty expensive operation, because it could be rearranging things on disk to free up space. Now, imagine you get hit by a spam bot and end up with a couple hundred spam comments.  Akismet catches them all, and 15 days later tries to delete them all in one big loop.  One big loop filled with a couple hundred table-locking, disk-intensive database operations. But it's easy to fix.  Replace the lines above with this:

$n = mt_rand(1, 100); if ( $n == 42 ) $wpdb->query("OPTIMIZE TABLE $wpdb->comments");

That will only optimize the table on average once out of 100 comments deleted.  Why 100?  It's an educated guess.  According to the MySQL documentation, at most you will need to optimize a table once a month or so, maybe once a week if you have a large number of deletes or edits on varchar fields. Why did I pick 42 for the one value out of a hundred that triggers an optimization?  You're asking the wrong question.