Radio internet is a generic term for any digital audio stream transmitted over the Internet, typically with an Internet connection. This service is often used in conjunction with a videocasting service, such as Livestream. In addition to being used for general audio transmissions, radio internet also has a number of specialized uses, including music streams, on-demand movies and TV shows, news and weather, games, sports, religious services, and Internet television.

Broadband radio internet is a form of broadcast music distributed over the Internet using a broadband network. Broadband broadcasting over the Internet is commonly known as webcasting because it isn't transmitted publicly through conventional radio channels. Instead, it is electronically transmitted through digitally encoded sound files, typically compressed into small packets that can be viewed by receivers on a wide variety of devices, ranging from personal computers to mobile phones to handheld devices like Portable Digital Assistants (PDAs). There are limitations to the kinds of content that can be presented through these broadcasts, and they vary by service.

Music-streaming is one type of internet audio broadcasting that is gaining momentum. There are a number of companies that specialize in providing music-streaming services, but a typical package will include music files for about 30 channels, as well as video files for about a dozen more. These services allow users to listen to the radio as they travel, allowing them to choose the songs that they want to hear while traveling. Video broadcasting services, which make use of high-definition (HD) broadcasting technology, are also popular for their ability to provide streaming television content (as opposed to regular radio). Other uses include interactive television and video streams, both of which are gaining in popularity for the purpose of entertainment.