When trying to learn how to play these files, a google search led me to another thread on this forum written by someone with the same problem. Another user suggest MacHacha as a decompression tool. I tried this, and it appears to have successfully decompressed the files into a basic .wmv file, however I am still unable to play the file. When I try to open it, quicktime says it is not a movie file. I installed the newest version of flip4mac, and still get the same result. VLCPlayer and RealPlayer also give me similar notifications. What can I do?