How to convert drm audio and video?

[Numan]

I'm trying for a while to convert protected wmv to mp4, all the methods I've tried failed or didn't like quality of the converted files.
I would like to put my videos on my iPhone and I need to convert them as those files are drm-ed. What drm converter do you use? I need a good one which doesn't...

[Sans]

Melodycan is a powerful Video Converter. This software converts avi (Windows Video), WMV (Windows Media Video) and m4v, mov, aac, ra, aa, mp4, snd, aif, m4p, rax, wav, ogg etc.
MelodyCan can also convert video files of any kinds to commonly used iPod MPEG4 files (MP4) and DivX files (AVI, DIVX)...