Client175 is a full featured MPD web client that provides all of the functionality of a desktop application in your favorite web browser. It was originally named ExtMPD, but I recently found out that the name had already been used. This is, by my count, the 175th client written for MPD. We ran out of catchy names a long time ago, and in my frustration I decided Client175 is the only reasonable name at this point!
The current version supports all the basic features you'd expect, including tag editing, cover lookup, and lyrics lookup/editing.