FLV videos require Flv Player to play video on your PC.
Download free FLV player (PC)
Download free FLV player (MAC)
MP4 Videos are a higher quality format that can be played on PC's and portable media devices such as the iPod Touch and Apple iPhone.
CONVERT YOUTUBE VIDEOS TO MP3:
GetVideoMP3 is the easy way to convert YouTube videos to MP3 and save them onto your PC forever for free! Simple and easy!
Simply enter the the YouTube url in our YouTube to MP3