When these errors are discovered, the group (or a different group) fixes the issue and releases a new version of the file. This fixed version is labeled . It signals to the downloader: "Don't download the first version we posted; it was broken. Download this one instead."
: A small "ms" (millisecond) slider in the settings gear that allows users to manually shift the audio forward or backward by up to 2 seconds. This fixes the "out-of-sync" issues often found in varied repack encodes.
In piracy terminology: