youtube How-to (2): Save files without hassles.

The simplest way is to use the online service:

http://vixy.net/flv_converter

There you drop in the url of the youtube page and select the file format you want. A few min later, you have a link to the converted file that you can download.

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There are other ways to do that, typically they involve saving a youtube clip as a .flv file and install a conversion tool on the computer to convert .flv file into a more usable format, one such method was described in a msg by 聖牛 a few days ago.