http://www.dvdvideosoft.com/download...3Converter.exe


This is the clearly free program. There are no spyware or adware. It's absolutely safe to install and to run!
Step 2. Launch Free Video to MP3 Converter

Follow Start > All Programs > DVDVideoSoft > Free Video to MP3 Converter or just click the program icon on the desktop.

The interface is very simple and self explaining. There are the field for an input file or a YouTube URL, the field for an output path, and lists with preconfigured profiles.
Step 3. Select input video file

Click the upper Browse... button to select an input FLV file from your computer.

Or enter a YouTube URL to the Input file field. The URL looks like:

YouTube - Space Ship One(1/4) (Digest version)

Note: It is recommended to "copy-paste" the link directly from the browser address bar to this field.
Step 4. Select the Output Location

Click the bottom Browse button on the right. Choose the location where you would like to save a new MP3 audio file. Click Save.
Step 5. Select the Output MP3 Profile

In the list of Presets select one of the available pre-configured MP3 presets:

- High Quality (MP3, 256kbps, 48000Hz, STEREO);
- Standart Quality (MP3, 128kbps, 44100Hz, STEREO);
- Economy Quality (MP3, 96kbps, 22050Hz, STEREO).
Step 6. Trim Video

Click the Trim video... button along the bottom of the interface to open the new window.

Use navigation line and special buttons to set start and end selection markers position.

Click Apply & Close to switch back to the main program window.
Step 7. Extract Audio from Video to MP3

Click the Convert button along the bottom of the interface to convert video to mp3 and wait just a few seconds.