From Music Player Daemon Community Wiki

Note: All these libraries are either in active development, or are current with the MPD protocol. These client libraries are generally included with the client that uses them, rather than in a separate package, although developed separately.

• libmpd-haskell - MPD library for Haskell
• JavaMPD - A Java MPD library
• JMPDComm - A library written in Java used to create MPD clients written in Java
• libempd - A LISP interpretation to interface a LISP program (EMACS) to MPD
• libmpdee - An Emacs Lisp library to interface MPD
• libmpd - A high level library reference to libmpdclient
• libmpdclient - A library written in C and can be used to create MPD clients that are coded in C, obj-C and C++
• Perl modules - Perl modules to create clients in Perl
• MPD.rb - A ruby MPD library.
• MPD-Class - A PHP class for MPD used to create custom web interfaces to MPD
• Net_MPD - A high quality PEAR/PHP interface for MPD
• NMusicPD - A CLR-compliant library written in C# used for communicating with a MusicPD server.
• py-libmpdclient - Python client library for MPD (deprecated)
• py-libmpdclient2 - A rewrite of py-libmpdclient with a new API
• python-mpd - Python MPD client library (recommended)
• mphp - A PHP5 PHP Class to be used for MPD communication
• tclmpds - A Tcl package for controlling MPD
• CL-MPD - A pure Common Lisp interface to Music Player Daemon. (hosted at [1])
• librmpd - Another Ruby library, features: thread-safe, callbacks, and a 'fake' test server for testing your client. Hosted at [2]
• mpd-client - A CHICKEN Scheme Library for controlling MPD