if your visitors want to listen music they will listen their mp3, your site is not a jukebox. In fact they most likely already are listening music and yours is only mixing with it, creating an unbearable and unwanted musical chaos.
I could make every word of this rant mine.
About the Author
Mirko Humbert
Mirko Humbert is the editor-in-chief and main author of Designer Daily and Typography Daily. He is also a graphic designer and the founder of WP Expert.