需要屏幕可以显示所播放的歌曲，可以切换下一曲和上一曲，谢了
http://www.pudn.com/downloads93/sourcecode/others/detail366282.html
http://wenku.baidu.com/link?url=PLCsLkd19wZPtRCUQkyW-QLQRzAwQoII711b20f22tcoKpmOiQJYxDcGHUZwfThuDDNOoNF4NXzdM8mhdDtPJvkKq5cnVkzs5OPaLxVSMdC
