The "Play" button is not there for any songs at all

Hi
Any help with this ?  My friend is a member of CHORDIE.com as I am as well.
He has an option of "listening" to a song....with a green "play" button.
I don't have that anywhere when I log in to Chordie.
My friend is using Windows 7 and I'm using Windows XP

Any Suggestions ?

Thanks in Advance.