if you are just looking to convert files, handbreak is the best of the best, only problem is that it has to be drm free music and video. I just posted thread about removing drm, look it up I was helped greatly.
not sure what the exact def.(go to wikipedia) is but basically it means that if you download you songs/videos on itunes, you can not try to convert those same songs/videos on another device like your storm.
Someone correct me if im wrong but thats my basic understanding.