To enable the DPF to work with lcd4linux a custom firmware is needed. You can find the firmware and flashing tools at the dpf-ax project page.
Lcd4linux is a tool to control LCD displays connected to the computer. A plugin system allows the additon of feautures. We use the DPF plugin to access digital picture frames and the Python plugin to call python modules from lcd4linux.
/var/lib/mpd/playlists
Use this directory to maintain a collection of playlists. You can use the common playlist formats like .pls and .m3u. I'm maintaining a single playlist for every station (STATIONNAME.pls) and a single playlist with all of my favorite station. This way mpc can jump to a specific station with a mpc clear and following mpc load STATIONNAME.pls command. The API server makes use of this to change stations based on requests.