Conver videos for use with my iPod 30g.

Quicktime, Quicktime Pro and iTunes don't convert "muxed" ( muxed means multiplexed where the audio and video are stored on the same track) video files properly. It only plays the video and not the audio.

See: iPod plays video but not audio.

You need a 3rd party converter to convert the file with both audio and video.

See this for help: Guide to converting video for iPod (Mac/Windows).

You need a third party converter to change the files. I've been using the Jodix iPod Video Converter and it works great! You can get it here: http://www.download.com/Free-iPod-Video-Converter/3000-2194_4-10498771.html Hope this helps!