ConcatSampler & Player 1664
They uses the same principle as the StretchSampler but apply it to a multichannel sound, or better, with different sounds for each channel.
In this case (Sampler version) you can feed it with a multitrack that has beed prepared in your DAW, or you can record each channel one by one or sequentially.
In the player version the Global Duration can be set manually and the play position adjusted for each sample according to its relative length.
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