You will need
  • computer;
  • - .
Instruction
1
Run Windows Movie Maker. Select the menu "File" select "Import into collections" (or simply press the keyboard combination Ctrl+I). Locate the desired video file on your computer.
Import the video into Movie Maker
2
Wait for the file import. Source video program is divided into clips of short fragments, each of which can be edited separately. Delete unnecessary pieces of video (if any), and all the pieces that accompany the desired sounds, highlight and select the menu item "Merge" (Ctrl+M).
Combine clips
3
Move the mouse merged clip to the timeline, in that its plot, which displays the sound track. Please note that the video track must be left blank. If you accidentally got on it, select the movie click and press Delete.
Load the video onto an audio track
4
Select the menu "File" item "Save movie file" (Ctrl+R). Specify the location to save the file, give it a name and set the quality parameters for the future audio. Click "Next" and wait for the save file.

Please note – the finished audio will be saved in wma format.
Select the save options
5
Install to your computer free video editing software Virtual Dub (it can be downloaded from this link http://virtualdub.sourceforge.net). Run the program and open the file.
Open the file in Virtual Dub
6
Edit the file if needed, by removing all superfluous fragments. Use the tools located in the menu "edit".
The editing tools are in the menu “edit”
7
Select the menu "File" item "Save WAV". Specify the path to save the file and specify its name. Click on the "Save" button - after a few minutes the audio wav file will be ready.
Save the sound as a wav file
8
Keep in mind that the program Virtual Dub is designed to work with AVI files. Windows Movie Maker supports more file types, but not all. For example, from popular online flv to extract the audio track in these programs, you will fail unless you first pereformuliruem video. Therefore, if you need to edit the video there, it is advisable to immediately convert the video into an audio file using a universal LNB.
9
Install the free program Format Factory (you can download it from the official website http://www.pcfreetime.com). Open the folder with the desired video and drag and drop it to the workspace window.
Drag the file from Windows Explorer the mouse
10
Select the suitable audio format. In the menu "Settings", specify the path to save the file and specify its name. Save the settings and click "Start" in the program menu. After a few minutes your audio will be ready.
Install file save options