file extension for 5.1 dvd files please help

  1. 184 Posts.
    This is totally unrelated to hc but does anyone know file extension for surround sound dvd files. ie mpeg1 or .avi. (neither of above) but i am curious as to whether dvd type music files can be downloaded off the net and dont know the file extension and search engines havn't helped.
    Thanks
    Market so depressing i got sidetracked
 
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