Pandora internet radio is exactly what it sounds like. Simple web streaming, easily accessable from any computer. But being based on the Internet Genome Project, Pandora uses a database of music assosciations to stream music similar to your tastes. The basic service is free, but is ad-supported, which can cause problems on slower connections. For $36 annually, ad-free service is availible, and also is supported on some Sprint phones and Sonos players.
