Media streaming is a great technology that allows you to view or listen to various forms of media from remote locations.  This service is usually provided over Wi-Fi, although there are other networking technologies, such as Bluetooth and 3G, that have streaming capabilities.  If you are into media streaming, especially for your music, then you may want to check out some of these popular media streaming services:

Lala

Don't be fooled by this web-based service's simple and playful name.  When it comes down to it, Lala is a convenient, easy-to-use, solid, and cheap music streaming service.  What makes Lala a powerful music streaming web app is that it has a two-in-one solution to all of your audiophile needs.  First, it offers a free, web-based music streaming client, which means you can stream music from your computer at home to practically any device that has Internet browser compatibility.  Second, Lala has its own music database where you can purchase DRM-free MP3 music files for $0.79, or you can purchase them for online play at $0.10 each.

Grooveshark

Like Lala, Grooveshark is a web-based, free music streaming service.  One of the main advantages of Grooveshark, however, is its impressive interface and its ease of use.  The interface looks just like a software music player and it works much like one too.  The unique thing about Grooveshark is that you can start compiling playlists as soon as the website loads, or you can create a free account with the site to access more features, such as saving and sharing of playlists, song flagging, and music suggestion services.  You can also access the Grooveshark Radio or upload your own music files to add to the Grooveshark database.

Pandora

Pandora is a much-celebrated web-based music streaming platform.  As a part of the Music Genome Project, Pandora has a huge database of songs and song information.  For example, you can analyze up to 400 different music attributes to look for songs that you search for and song suggestions that are similar to whatever your search is.  The great thing is that you can search using phrases and sentences, such as, "Play the song 'Red House' from the 'Blues' album by Jimi Hendrix," which will then probably result in a perfect match for the song you were looking for as well as a number of other similar songs to choose from.  Also the Music Genome Project allows you to easily rate and create personalize streaming radio stations.  You can use a basic version of Pandora for free or pay $36 per year for the fully-featured premium version.

Other choices

Some of the other great music streaming services out there include Spotify (although Spotify no longer provides services to US residents due to legal disputes), Last.fm, and Slacker Radio.