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Stuffit expander is a free compression program that can be used for Mac files, which saves room on a computer by compressing files into ZIP and TAR files. Whether saving computer space or trying to email a large file, compressing files on a Mac is simpler with tips from a computer specialist in this free video on computer technology. Expert: Michael Jurkowski Bio: Michael Jurkowski has been a computer expert since he setup a hand-me-down DOS-only PC when he was seven. Filmmaker: Christian …