Hi guys

I need to author a Bluray disc, nothing complex. Just have a movie in HD which I need to make a Bluray disc of. I am even willing to sacrifice a menu. But I do need it to play with 5.1 sound. I have the sound as a 5.1 AC3 file.

Is there any open source software around that will enable me to do that? I'd appreciate any help you can offer me. I love the compatibility of DVD Styler and DeVeDe for regular DVDs, but I can't seem to find anything for Bluray.