Wmv/avi/mp3 files don't play anymore!

I sometimes had problems with video files that had a black screen, but not
like this.
All WMV/AVI files and MP3 files don't play anymore (black screen), only
pictures, effects and transitions work. I think the problem has to do I
deleted ffdshow.ax in System32. But I saved them somewere, and now I noticed
it all didn't work I placed them back. No difference..

I haven't done much movies lately, so I don't know for howlong this problem
exists, but .. I need to get it fixed!!!

Filters:

1. Roxio MPEG2 Demuxer - 9.0.1.85 - DLL
2. Intel(R) IPP VOB Source Filter - 0.0.0.0 - ax
3. ArcSoft AC3 Audio Decoder - 2.4.1.7 - ax
4. ArcSoft H263 Decoder - 1.0.0.19 - ax
5. ArcSoft ARMDecoder - 1.0.0.19 - ax
6. ArcSoft TS Streamr - 2.4.2.37 - ax
7. ArcSoft MPEG Splitter - 2.4.2.39 - ax
8. AVI Decompresser - 6.6.6000.16681 - DLL
9. Funbox Audio Codec Filter - 1.0.0.2 - ax
10. Arcsoft MPEG2 Audio Decoder - 1.0.0.5 - ax
11. Funbox Conversion Filter - 1.0.0.1 - ax
12. -(block) 2.0.23.0 - DVobSub.ax
13. ArcSoft MPEG4 Decoder - 1.0.0.17 - ax
14. ArcSoft AAC Decoder - 1.0.0.5 - ax
15. Mainconcept MPEG Audio Decoder - 1.0.0.78 - ax
16. Mainconcept MPEG Splitter - 1.0.1.20 - ax
17. Intervideo Audio Decoder - 7.5.49.0 - ax
18. Xvid MPEG-4 Video Decoder - 0.0.0.0 - ax
19. Intervideo MPEG4 Video Decoder - 0.8.8.0 - ax
20. Funbox Video Codec Filter - 1.0.0.6 - ax
21. ArcSoft MPEG Audio Decoder - 2.4.2.16 - ax
22. ffdshow Video Decoder - 1.0.3.1023 - ax
23. ffdshow Audio Decoder - 1.0.3.1023 - ax
24. Intervideo Video Decoder - 7.0.27.248 - ax

I had some problems with Xvid too.. Giving errors in Vista..

I have version 6.0 Vista

Please help me out, I need my moviemaker!

TheOnePb