Here are a few of my favorite sites for downloading and streaming.

I like to make music and have found that you can find some good beats and artists to collaborate with here: http://www.soundclick.com

One new powerful tool used nowdays for downloading is a torrent downloader. Here is the location of the one I use: http://www.bittorrent.com If you download this tool and want to use it, here are some popular sites to download from: http://www.isohunt.com
http://www.btjunkie.net
http://www.mininova.org

If you don't want to use bit torrent and would rather just download single songs, check out: http://www.jamglue.com

If you are looking to watch new movies online for free, check out:
http://movie6.net/movie-/ and of course
http://www.youtube.com