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by flyingmutant 3891 days ago
Cmus does cache all the metadata — in the file named, unsurprisingly, «cache». You can restart cmus, and notice that the startup will be instant (even on an HDD with 100+GiB of music).

Re-adding the ~/music should work fine. There is also an `:update-cache` command which will update the metadata for all (changed) files, and remove the missing ones.