Ah, that's because www.mixest.com and mixest.com are technically different domains :(. I'll get that fixed up, but your loved songs should appear on one of the two domains.
A small bug : sometimes when I click Next, nothing happens, so I clicked Next many times. That ended up in the song history becoming like this : http://i.imgur.com/yUcj5.png
RewriteEngine On
RewriteCond %{HTTP_HOST} ^mixest.com$ [NC]
RewriteRule ^(.*)$ http://www.mixest.com/$1 [R=301,L]
... just without the double spacing. HN was turning it into one line if I didn't double space.