Downloads a collection of samples into the user's cache, so songs play them with no network access.
mix mx.samples.download sonic_pi
mix mx.samples.download "sgossner/VCSL@c1ea7bcc3c7309650ab0da9d15c9cd1fbc4a4c7e:Idiophones/Struck Idiophones/Agogo Bells"SOURCE is sonic_pi for Sonic Pi's pack, which is under Creative Commons 0, or a public GitHub repository as owner/repo@ref, optionally followed by :folder to download only that folder.
Files already downloaded are skipped, so running it again finishes an interrupted download.
The mx command does the same with mx samples download SOURCE.