Issue with progress indicator stopping half way (even in Chrome/Firefox)

Hi there,

I'm having a strange issue whereby the progress indicator is stopping halfway round:

http://www.red24management.com/single-voice/

It was working absolutely fine but at some point it stopped working and I'm stumped as to what it could be.

The player is toward the bottom of that test page, I'd greatly appreciate any help on this.

Thanks,

Jack
