Ok, I'll give that a try except I don't believe Imgburn exists for Mac but perhaps just burning both to a disc will do the trick? Anyone with a Mac tried this straight burn method burning both the BDMV and CERTIFICATE folders straight to a dual layer disc?

edit: Ok, so for the mac users that perhaps like me are new to mac and/or slow I simply used the disk utility. I hit the burn icon, located the iso, and burned that straight to disc, a dual layer disc. It plays perfectly in my song bluray player. Starts up automatically etc. No Toast needed even!