一、获取音乐资源

百度有个音乐接口，

http://box.zhangmen.baidu.com/x?op=12&count=1&title=大约在冬季$$齐秦$$$$ 

返回结果为

This XML file does not appear to have any style information associated with it. The document tree is shown below.<result><count>1</count><url><encode><![CDATA[http://www.php.cn/$]]></encode><decode><![CDATA[64380827.mp3?xcode=18608e7363b77ed8a42198883eaebbe5eaa48b2ded70843d&mid=0.22264755398478]]></decode><type>8</type><lrcid>14706</lrcid><flag>1</flag></url><durl><encode><![CDATA[http://www.php.cn/$]]></encode><decode><![CDATA[35424427.mp3?xcode=18608e7363b77ed871a3d2f34deba9b485f4ad5eba69d143&mid=0.22264755398478]]></decode><type>8</type><lrcid>14706</lrcid><flag>1</flag></durl><p2p><hash>d1cae9f7634c5aa3d54d7b1b1ad4c5b79b6e97ff</hash><url><![CDATA[ ]]></url><type>mp3</type><size>5710896</size><bitrate>192</bitrate></p2p></result>