Player not showing under WP Post Tabs on Internet Explorer 9

Hello,
my Soundcloud is Gold player is not showing on IE9 – only if I reload the page.
I believe it is because of WP Post Tabs plugin; when I disable it, it works.
I’ve based the whole site using tabs, I wouldn’t like to disable them.
Any ideas?

Example:
http://danmaia.com/2012/10/o-andante/

The player should be under the second tab, “Trilha Sonora”

Thank you very much,
Daniel

http://wordpress.org/extend/plugins/soundcloud-is-gold/