Here is for full Step-By-Step instructions to removing DRM from .wmv files:
Step1, Install and run the WMV DRM removal software - Tunebite Platinum, It can convert DRM protected WMV video file to WMV (.wmv7 / .wmv9), M4V, MP4, AVI, Xvid, 3GP. When the install process is finishing, please add .WMV files to the WMV DRM crack tool.
Step2, Select the output video format you want to convert to, WMV (wmv7 / wmv9), M4V, MP4, AVI, Xvid, 3GP. formats are provided for you.
Step3, Press the button 'Start' to start the conversion process.
Step4, Find out the converted music files in the player, then you can enjoy it.