Yougle FFDShow and Quicktime Alt, no audio

I asked around at the push-a-button but didn't get a good answer from anyone at the site.

When I download a quicktime movie via Yougle and play it in media center it doesn't play any audio. The video plays perfectly fine.

I have noticed in the tray that only Matroska and the FFDShow video trays are active and no audio.

Any way to fix this?

Anyone?