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So I'm archiving a laserdisc, and here's a fun fact about laserdiscs: Some of them have both analog and digital sound tracks! Obviously I'm archiving both of them, but ran into a weird problem: They're out of sync! I'm demonstrating this in an audio editor, by playing them both at once.

Maybe it's on purpose? The digital signal you have to decode, which takes a moment, and you can buffer it. The analog one you just bang into the amplifier.