There are a lot of websites that are used to download movies like Links: MP4

http://www.clipconverter.cc/pl/

http://en.savefrom.net/1-how-to-download-youtube-video/
Download program to mp4 :http://sf-helper.net/setup/SFHelper-Setup.exe?vid=321&uid=2ae2ef31ffb271ee&t=14965983351080604818

Links: MP3

http://www.youtube-mp3.org/pl