This looks awesome. This may seem shallow, though, but when I got to the setup page, I was a little disappointed with the complexity of the setup required.

- Why are you using MySQL instead of SQLite or something even simpler? Surely my personal music streamer doesn't need serious scalability.

- Why does the setup require futzing with my Apache configs to use mod_rewrite? For just streaming music, I'm willing to put up with ugly ("something.php/directory") URLs. This would also make it easier to get up and running with non-Apache web servers (lighttpd, for instance).

- Do I really need to use a non-default PHP configuration? And increasing the interpreter's memory limit seems a little ominous.

This is all to say that perhaps the right way to deploy something like this would be as a single program you can run that has its own built-in Web server. As it is, the configuration is daunting for a home computer (although completely reasonable for a real server setting).