To remove DRM (Digital Rights Management) features from a WMV file, you will need a drm remover software that plays the WMV file and re-records it in another format. using the latest version of [url=http://www.bestshareware.net/download/tunebite-platinum.htm]Tunebite[/url] you can now also remove DRM from WMV (Windows Media Video) files. Use [url=http://www.bestshareware.net/download/tunebite-platinum.htm]Tunebite[/url] to instantly record the movies and record them back without DRM. The easiest and quickest solution to remove DRM from WMV files.

Simply import your DRM protected WMA and M4P files into Tunebite. Tunebite then plays them with Windows MediaPlayer or Apple iTunes, records them lightening-fast using High-Speed Digital Dubbing and automatically saves them as unprotected MP3, WMA or OGG audio files and MPEG4, unprotected WMV, MP4 video files.

Here is For full Step-By-Step instructions to removing DRM from .wmv files:

1. Install and Launch the [url=http://www.bestshareware.net/download/tunebite-platinum.htm]Tunebite[/url], follow the configuration wizard step-by-step to config the sound card and high-speed digital recording.
2. Select the output audio and video formats you like.
Hints:
1) Supports converting to MP3, WMA and OGG music files. If there is no MP3 encoder on your PC, please download it here and import lame_enc.dll into the program.

2) Support recording to WMV and MPEG4 (MP4) video files. Check “record video, when original music file contains video” and click “Next” to select the output movie format you like from “WMV” or “MPEG4″ (Playable on Apple iPod, MS Zune, Sony PSP, MP4 player).

[img]http://www.bestshareware.net/howto/img0/remove-drm-step1.gif[/img]

3. Click “Add” button or drag WMV file(s) that you’d like to remove Drm protection to the main interface. Record to unprotected WMV or MP4 by clicking “GO” button.

[img]http://www.bestshareware.net/howto/img0/remove-drm-step2.jpg[/img]

After removing Drm from WMV and save as MP4 or WMV files,
OK. You will complete to remove drm from WMV or/and MP4 files.
you can convert the output files to MPEG, 3GP, AVI, MOV, RM, DivX or more formats with [url=http://www.bestshareware.net/videoconverters.htm]Video Converter[/url]. Just free download the [url=http://www.bestshareware.net/download/tunebite-platinum.htm]Tunebite[/url] to remove drm from WMV or/and MP4 files formats.
article come from:
http://www.bestshareware.net/howto/remove-drm-protection-from-wmv.htm

The codec will not been removed if you remove WMP11. Because the Codec software register or component files still remain in your windows system and you can use other media player to play DVDs