by 
Amit Agarwal has discovered that Google Talk’s new voicemail feature utilizes the Google Video player and can be hacked to play any MP3 of your choice.
…you can play any MP3 files from the embedded Google Video player without even having to login to GMail. Here’s the secret URL (works perfect in Firefox)
http://mail.google.com/mail/html/audio.swf?audioUrl=MP3_URL
Not sure why you’d won’t to uses such a basic player, but have at it!
