To achieve delays that are quantized to a named transport, use a combination of pipe (delay numbers by the desired amount), translate (to set the pipe to the desired delay time), zl group (hold onto numbers as they come out of the pipe) and metro (following a particular named transport and quantized to the time unit you want).
While zl lace interweaves two lists, zl group allows you to interweave more than two lists. Retrieve the length of the list using zl, send it to uzi to retrieve the data in each index stored in the coll files, and pack them all to be interweaved by zl group.
The matrix~ object is a multichannel audio mixer. It’s useful as a mixer of sounds, and also as an audio switcher/router, because you can route any input to any output, with built-in interpolation for smooth, click-free amplitude changes.