Youtube is a great place to listen to music, and to watch videos too :-). It would be awesome to convert the videos to Mp3 files, so you can put thoose files straight on your ipod or any similar portable player and enjoy your music on the go.
Actually therès a web app to get the job done: mediaconverter.
Here the link: www.mediaconverter.org
How to use it? Well, go to the link above, select enter a link and paste the URL of the Youtube video you want to convert:
click ok and then next step. Now select the output audio format: you can choose between a bunch of different formats including the common Mp3. Now click start and wait for the conversion to complete. When done, click download to get the Mp3 file.