examples: fix require() call in mp3player.js example
examples: fix require() call in mp3player.js example

EQ4/node-lame,dag10/node-lame,PlayNetwork/node-lame,mcanthony/node-lame,mcanthony/node-lame,dag10/node-lame,mcanthony/node-lame,EQ4/node-lame,EQ4/node-lame,PlayNetwork/node-lame,TooTallNate/node-lame,dag10/node-lame,TooTallNate/node-lame,TooTallNate/node-lame,PlayNetwork/node-lame