Don't be confused. The MP3 player and glasses are acctually one stuff. I think it's cool. If someone asks you what you are doing when you wear the glasses, you can answer "I am listening to music" and show your glasses. Very cool. I wanna get it, but still wanna some suggestion here.
And you can have a closer look on:
http://www.tinydeal.com/R001/sg22g-p-5573.html