I've recently encountered a script error while listening; it locks the 'play / song list ' box, and eventually the music.  I can get back to main page, but its impossible to get back to the song list box without restarting the browser (FireFox).  Perhaps coincidently, this problem only started occurring when the obnoxious advertising box was inserted  into the play box.  Any suggestions to remedy?

I get the same problem, and it started at the same time.
The error message is :

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: http://concerts.wolfgangsvault.com/common/js/sitewide.js?cb=13.0.20521.10025:157

Both the stop and continue buttons result in the box reappearing.