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#4 answered: ADV.wmv carries ONE audio stream and it is WMA Pro 5.1, not XMA, so the movie's own track is the bed and the three streams are additional. Solving capture = 0.600 x movie + residual gives three residual signals at three positions, with LFE reproducing to -115.73 dBFS -- where nothing is added the decoders agree exactly, so the rest is added content. presentation: all keeps every equal-length non-silent survivor -- ADV 2 of 3, S00A 1 of 3 -- and the warning now keys on kept < present rather than on more than one existing. A unity sum was tried first and check refused it at +2.62 dBFS. The BGM stems precedent did not transfer: those are stems of one signal, these are positions in a field whose downmix weights sum to one whatever the assignment. Dividing by the count preserves the total and claims nothing about placement; ADV lands at -3.1. That is the OPPOSITE of the two divisor bugs already in this file, where a silent input sat in the divisor. Divide-by-N is not right or wrong in itself. Also carries their census correction: the ALSA permutation does not apply, the map is the identity, and the '82% silent' channel was LFE. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
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