Is there an easy way to get audio off a video?

i will probably post this on Tested if I get no replies but since I'm on GB here we go. I have a couple of videos (mp4, avi etc) and want to extract the audio to make into mp3s and put on my ipod. Is there a program (free would be great) that can help me out and easily do this job?
 
Thanks
 
Edit: Using VLC Player
 

VLC is not just a Media Player, it is a whole software in itself.This is just an experiment which I did to try and get an MP3 file from a video I downloaded from YouTube.

VLC has a very easy way to convert the FLV (or any other video file for that sake) to MP3

All you need to do is:

1. Open VLC.
2. Go to Media –> Convert/Save.
3. When you click Convert/Save, it opens a dialog box where in you can select the file which you need to convert(i.e. the video/FLV file which you wish to convert to MP3).
4. After selecting the file click on Convert/Save button located in the lower right hand side of the dialog box.
5. After this,there would be a dialog box for Stream Output. Check the option ‘File’, and go to ‘Browse’ to locally save the file with the filename of your choosing. Whenever you enter the new file name and click Save, a “.ps” is appended at the end of the file name. Substitute the “.ps” extension with a “.mp3″ extension.
6. In the Settings section of the Convert dialog box there is Profile drop down menu. Within the Profile section pull the menu down and select MP3 (for MP3encoding).
7. Click SAVE and let the data Stream. Once finished, open the MP3 file and enjoy.

I use AoA Audio Extractor.

You can open up Audacity, hit record, and play the video from beginning to end. OK, it's an impractical option (you have to play the video in full from beginning to end, and you can't use anything that makes sound in the time it takes to record), but it's an option.

I use Soundflower. Looking at google though, I think it might only be on Mac. Unless that's what you're using.

A tape recorder works pretty good.

VLC can do this. If you already have it installed then I'd go with that.

VLC can do this. If you already have it installed then I'd go with that.

Well I dont know if this would work but you could use imovie and extract the audio through the advance options ... export it to garageband and then make it an mp3 , this asuming that those programs are like the ones I had ijn my macbook

Use Audacity with the Realtek thing. Just record and then play the audio.

Ya dude, I have this thing called a "microphone", it does a pretty good job getting audio.