pi-radio-mpd - my simple wrapper for mpd to serve rest/json kind of api. working just fine on my RPi.

pi-radio-mpd.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import web, json, time, mpd, collections

STATIONS =  {
    "FoxNews" : "mmsh://209.107.209.181:80/D/138/13873/v0001/reflector:24137?MSWMExt=.asf",
    "Classic" : "http://radio02-cn03.akadostream.ru:8100/classic128.mp3",
    "Jazz": "http://streaming208.radionomy.com:80/A-JAZZ-FM-WEB"
}


urls = (
    '/', 'index',
    '/apple-touch-icon.png', 'icon',
    '/list', 'list',
    '/play/(.*)', 'play',
    '/volume/(.*)', 'volume',
    '/volume(.*)', 'volume',
    '/stop', 'stop',
    '/status', 'status',
)

app = web.application(urls, globals())
index_page = open('index.html', 'r').read()

class index:
    def GET(self): return index_page

class icon:
    def GET(self):
        web.header('Content-Type', 'image/png')
        return open('pi-radio.png', 'r').read()

class list:
    def GET(self):
        print STATIONS
        web.header('Content-Type', 'application/json')
        return (json.dumps({'response' : {'list': collections.OrderedDict(sorted(STATIONS.items()))} }, separators=(',',':') ))

class volume:
  
    def GET(self, volume_level): #level between 0 and 10
        mpc = mc.get_client()
  
      	level = int(mc.get_client().status()['volume'])
      	if volume_level:
      	    if int(volume_level) == 0: level = 0
      	    else: level = 80 + int(volume_level) * 2
      	    mpc.setvol(level)
      	else:
      	    volume_level = (level - 80) / 2
        print "set level=%d, %s" % (level, volume_level)
        mc.release_client()
  
        web.header('Content-Type', 'application/json')
        return (json.dumps({'response' :  {'level': volume_level} }, separators=(',',':') ))

    def POST(self, volume_level): return self.GET(volume_level)

class play:
    def GET(self, station):
    	print "play station="+ station.encode('utf-8')
    	client = mc.get_client()
    	client.stop()
    	found_id = [sid for sid, st_name in mc.ids.items() if st_name == station][0]
    	print "play id=%s" % found_id
    	client.playid(found_id)
    	mc.release_client()
    	web.header('Content-Type', 'application/json')
    	web.ctx.status = '201 Created'
    	return (json.dumps({'response' :  {'station': STATIONS[station]} }, separators=(',',':') ))

    def POST(self, volume_level): return self.GET(volume_level)

class stop:
    def GET(self):
    	print "stop"
    	client = mc.get_client()
    	client.stop()
    	mc.release_client()
    	web.header('Content-Type', 'application/json')
    	return (json.dumps({'response' :  {'result' : 1} }, separators=(',',':') ))

    def POST(self): return self.GET()

class status:
    def GET(self):
    	mpd_status = mc.get_client().status()
    	print "status = " + str(mpd_status)
    	mc.release_client()
    	volume = (int(mpd_status['volume']) - 80) / 2
    	web.header('Content-Type', 'application/json')
    	if mpd_status['state'] == 'play':
    	    station_name = mc.ids[mpd_status['songid']]
    	    return (json.dumps({'response' :  {'status' : 'play', 'station' : station_name, 'volume' : volume} }, separators=(',',':') ))
    	else:
    	    return (json.dumps({'response' :  {'status' : 'stop', 'volume' : volume} }, separators=(',',':') ))

class mpd_controller:
    def __init__(self, stations):
	    self.client = mpd.MPDClient()
    
    	try:
    	    self.client.connect("localhost", 6600)
    	except mpd.ConnectionError:
    	    print "already connected"
    
    	self.client.clear()
    	self.ids = {}
    	for (st_name, st_url) in stations.items():
    	    self.ids[self.client.addid(st_url)] = st_name
    	self.client.disconnect()

    def get_client(self):
    	try:
    	    self.client.connect("localhost", 6600)
    	except mpd.ConnectionError:
    	    print "already connected"
    	return self.client

    def release_client(self):
    	try:
            self.client.disconnect()
    	except mpd.ConnectionError:
    	    print "can't disconnect"

mc = mpd_controller(STATIONS)

if __name__ == "__main__":
    app.run()

Requires python 2.6, mpd, python-mpd2 and wep.py

• For UI see https://gist.github.com/4432182
• API - http://docs.radiorpi.apiary.io

Requires python 2.7 or ordereddict package http://pypi.python.org/pypi/ordereddict
OrderedDict was not added to Python until version 2.7.