On my itv HD I only have the one audio stream 'MPEG - English', where abouts are you? I know a while ago that one of the Scottish channels did the same for a few days.
When did you flash grogbuild freerange? press menu button and select Setup -> Service Searching -> Autobouquets Maker -> About, what version does it show, the latest is 3.1. Now press exit button and select Update Provider files and if there are updates run a scan again.