Hi, I've discovered that some 5.1 streams incorrectly seem to encode the LFE element as a second SCE (Single Channel Element). With the previous channel management in AAC this was less of a problem as it just kept adding elements as it discovered them. So, in order to comply with these broken streams a kludge is needed (attached). I still believe that my version is better because: * It's written to comply with the standard, not to make things up as we go. * It's more compact, and much less code in the output-mixer stage. Just want to inform you guys on whats going on. If nobody objects I'll commit it.