I have similar problem. RMVB files are not shown from the PS3. However, it works if I renamed the filename from RMVB to RM.
I have done clean installation twice already. These is my current installation:
- Windows XP
- PMS 1.10.51 (also tried older veison)
- avisynth 2.57
- ffdshow rev 3305
- Real Alternative 2.02
Thanks for your help!