If you want to listen to music online without downloading anything, then services such as Pandora radio and MTV.com are most popular, among many others.
If you want to access free music online, you will basically require simple things such as a computer with Internet access, and speakers or headphones to enjoy streaming audio. A simple search will provide you with hundreds of websites and services which offer free music on the web. Some of the good websites for Internet radio are MTV.com, VH1.com, Pandora radio, and Last.fm. Such websites generally have a radio link through which you can get access to hundreds of online radio stations. The songs are categorized according to music genre, artist, etc. Some of the online radio websites might ask you to register for availing their service. On few websites, you can search for radio stations according to the artist you want to listen to. You may also be provided with the feature of viewing music videos of your favorite artists. Internet radio websites not only allow you to listen to music, but also let you listen to talk shows, sports radio, news, etc. After choosing a web radio station, just click on the play button if the option is provided. Some services give you a choice of installing a quick toolbar too, so that you can simply play your favorite music anytime, regardless of the website you are on. Some websites might even ask you to download their software first.
Here are some tips that will help you in safe surfing while you are listening to music online. The first thing you need to remember is that you should always go to reputed sites for listening to online music. Many sites can download some spyware, adware, or other nasty things into your cookies folder, which can harm your computer badly. So be careful where you go to listen to your online music. Also, you need to have a decent Internet connection, so that the music plays smoothly without any buffering. Most of the following websites and radio stations allow you to add specifications so that you can create a virtual playlist with specific artists, soundtracks, and even genres of music that you prefer. Musicovery, for instance, allows you to create playlists depending on your mood. You can select from amongst moods like, dark, dance, soft, energetic, etc.
Note that few websites may require you to have a compatible computer configuration and settings for their service to run smoothly. You may even use this Internet service on the Apple iPhone and other PDAs.