The Walker Art Center's Gallery 9 has commissioned "Free Radio Linux," a new project by radioqualia. What is it? An online radio station. But no ordinary online radio station. It's also the first net.radio distribution of Linux, the true geek's favorite open source software. Huh? Well, the sounds transmitted aren't music, but a computerized reading of the entire source code used to create the Linux Kernel, the basis of all distributions of Linux. Naturally, the project launched on February 3, the fourth anniversary of the day the Open Source Initiative (http://www.opensource.org/) coined the term "open source" as a label for freely published code.