Extract Album Art Image of MP3 URL

I am trying to extract album art image from mp3 URLs. I am basically having several MP3 URLs set, and I am playing them on a website, but I do not have album art of the songs. How can I get it? Is it possible to parse ID3 tags to get album art?

How do the window media player, vlc player and winamp player show album art of songs even if there is no such image in the songs directory?

I implemented the website using php and js.

Please help me out, thanks. Kevindra

I know VLC uses freedb.freedb.org to get his info, you could google for a API or build one to get the data through freedb.freedb.org:8880/~cddb/cddb.cgi