channel:

http://douban.fm/j/app/radio/channels

playlist:

http://douban.fm/j/mine/playlist?type=s&sid=331663&pt=112.3&channel=3770138&pb=64&from=mainsite&r=a91682610b
album:

http://music.douban.com/subject/3240562/
search：

http://music.douban.com/j/search_suggest?q=?
song_url:

http://music.douban.com/j/songlist/get_song_url?sid=1224241&ssid=a9ed

DouBan FM API