Where Can I Have A Free Mazacam Where Can I Find A Free Youtube Downloader?

Where can I find a free Youtube downloader? - where can i have a free mazacam

I have a YouTube Downloader and everything seemed find until he said, while the free trial version that only 50% of song downloads. So now I need a place where things find Youtube to MP3, but I need freedom and want to know, will get to crash my computer, because usually it is a virus or something.