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If you have a video game or used music store nearby, many of them have buffers that may (keyword = may) help. Those buffers used to be more common, but I know the local gamestop doesn’t have one any longer, so try independent shops. I have used a soft paste wax and a lint free cloth to minimize scratches on video games discs in the past, with more failure than success, but once in awhile, it did help. The big thing to remember is never to rub/polish in a circular manner, always go from center to edge of the disc. It’s usually those scratches that are essentially parallel with the disc edge that cause the read problems.