Please try the build from this other buiild. I have had this issue extensively before and I created a special build for myself to handle it. It is because in the old ffmpeg builds they use an aac decoder called libfaad but in the new ones they have a built in decoder for aac. However there was a bug that was created that could not handle certain aac streams. So i made this build that specifically uses libfaad again. However.....this bug does not exist in the very latest SVN builds so this workaround is not necessary on newer builds, but I dont have an already built compile of that online. Also this does not have any of rdian06's 5.1 mapping fixes. So until he releases his updated ffmpeg you will have to pick and choose which issue you want to live with.