How to convert mp4 files?

Do you have mp4 files and want to convert this files to other format? I use MP4 Converter and I recommend it to you. This is the fastest software I've ever used. I need just click "Convert" button and MP4-Converter can convert MP4 files just for seconds. I even don't need to show you how to use MP4-Converter because it is so easy understand that all non techs will be surprised. You can convert MP4 files for iPod, iPad, iPhone, Zune, PSP or other devices. There are also some great additional features of MP4-Converter but I don't want to say about them because it will sound like advertizing:)