I am having the same problem like what Anthony7 had. When i click on the file and go to properties it says RealAudio / RealVideo VBR. It could be a RMVB file since i can only watch it with real player. I have another question, why is it that sometimes when i tried to convert a RMVB file with winavi video converter to mpeg, it wont let me. It says "unable to the source" whereas some other RMVB files can be converted successfully. Do you have a software that I can burn or convert these files?