Download the Mpeg1 version. Audio IS IN SYNC on this version, this is the one to download. MPEG1 version is the fixed versions, all the other versions at this URL are rederived versions... problems with all versions but the MPEG1 version, which is fine. The other version (at the other archive.org URL) has narration-not-synced-to-scene ("including anchor chain" comes several seconds after image of anchor chain, "conestoga wagon covered by canvas" comes before pic of wagon... in this version the scenes match the narration.