Just of pure curiosity - what is needed to add E-AC3 decoding support? IIRC, this is really called ATSC A52/B and standard is available. Can somebody clarify the differences between plain AC3 and E-AC3? Justin Ruggles works on native AC3 decode, I work on libdca port to lavc by Benjamin Larsson, so E-AC3 is the only thing needed to play those HD-DVD/Blu-Ray.