Aug 24, - The tool I use most often for extracting audio from video files is and pick your file which can be in AVI, FLV, MP4, MPG, MOV, RM, 3GP, WMV. Part 2: Detach Audio from WMV Files by Using VLC. Click Media from the top menu bar, and then click Advanced Open File from the drop-down menu. In the File tab, click the Add button, and select your video. In the Convert window, enter your output destination path.