To extract a song or episode from a movie, you can have Xilisoft
Video to Audio Converter to assist you. The professional video to audio converter can easily convert AVI video to MP3 as AVI to MP3 converter, convert WMV to MP3 as WMV to MP3 converter. With it, you can easily get MP3, WMA, WAV, RA, M4A, AAC, AC3, OGG or Sun AU audio from video AVI, MPEG, WMV, DivX, MP4, H.264/MPEG-4 AVC, RM, MOV, etc.
The video to audio converter supports batch conversion, thus you can process multi-conversion at the same time and set many output audio formats for one video to convert. What's more, you can freely edit music ID3 tag info and change audio parameters to output when convert video to audio. Supporting drag-and-drop to load file makes the video to audio conversion so easy. Don't hesitate to have a try right now