file extensions

The following files I have not been able to open
Can you help me:
xvid-deity
xvid-DcN-[Bt-gm]-[efnet]
beefstew
dmd-cbtd
xvid
my media player does not recognize these type of files.Please help

xvid-deity is a rare file used mainly for porno clips

xvid-DcN is a file for people named Bruce. If your name is not Bruce, you will not be able to open it.

beefstew is last weeks dinner

dmd-cbtd is a hospital file

xvid is a former video file, no longer in existence

The following files I have not been able to open
.dat
.rm

Hi, you can get your problem solved with an all-in-one video converter, which can re-encode all popular videos with the encoder your player can read.
If you didn’t do this before, the tutorial about how to convert a video would be helpful.

WMV Video Converter for mac, DVD to WMV Ripper.