ReOrganize4L is a tool for rearranging the files on an MP3 stick. It is based on ReOrganize! for Windows and supports many devices. The main idea behind it is that most MP3 sticks sort the tracks by date. ReOrganize4L first copies the tracks to a temporary directory on your hard drive, then rearranges the order of the files. After this, it copies the tracks (with the new order) back to the stick.
php edna is a port of the edna MP3 server to PHP, but with its own features. The most noticeable difference compared to the original edna is the XHTML 1.1 Strict compliant output with UTF-8 charset and support for custom themes via CSS. There are also a few other goodies like enqueue links and tarball generation.