add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

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# From https://www.kernel.org/pub/linux/utils/kbd/sha256sums.asc
sha256 5fd90af6beb225a9bb9b9fb414c090fba53c9a55793e172f508cd43652e59a88  kbd-2.0.4.tar.xz