Streaming music online is becoming a more popular way of listening to your favorite songs while away from your MP3 player or your music collection at home. Here are just a few of the great sites out there that let you stream music over the internet.
GroovesharkTheir layout is similar to iTunes--you can build your own playlists, mark your favorite songs, and share songs and playlists with other Grooveshark users, as well as friends on Facebook and Myspace.
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This site's "Music Mover" software lets you sync your Lala account with the music on your computer, giving you access to your music collection from anywhere. You can listen to a song you don't own once for free, and then buy either unlimited online access or an MP3 download.
Last.fmLast.fm offers the ability to create "radio stations" based on a particular artist or song and share music and pictures with other fans. Their most well-known feature is the ability for last.fm to generate a chart that lists your most recently played songs, which can be posted anywhere online.
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Like last.fm, Pandora lets users create radio stations based on an artist or song they already like, and then further customize that station by giving each song a thumbs up or thumbs down. Great for finding new music that is similar to your current interests.