Using a tool like 7-Zip to decompress the archive.
In tailoring or sewing, it refers to preparing a fabric section for final assembly, such as inserting ties or topstitching.
If the file is related to a creative project, it may mean preparing a specific segment or "piece" of media for playback or editing.
If you are following a specific set of instructions or a README file included with , "prepare piece" likely refers to one of the following actions: