Can't access iTunes media!

Dear ATV Flash Forum-ers,

I have been using an external hard drive as my main hard drive with the Apple TV, thanks to ATV Flash.

With the ATV3.0/ATVFlash 4.0 updates, I turned the hard drive back to internal and then back to External but iTunes doesn’t identify the media as iTunes content. It’s all on there (all 180Gb of it), but can’t be accessed.

Do I really need to reformat the hard drive and re-sync everything, or is there a way to get iTunes to identify it again? I also have a couple of TV shows on the ext hd that I hadn’t sync’ed to the laptop - I know, my own fault…

Thanks in advance…!