The Rdio Web Service Ruby SDK by Rdio allows API interaction to implement audio and music streaming. Examples show how to authorize user credentials and create playlists from artists. Rdio has been recently acquired by Pandora. For integration updates, follow @Rdio on Twitter.
Spreaker gives you, the budding podcaster, niche music genre aficionado, or social justice reporter, a high powered platform to disseminate your message throughout your social network. The service, and its Spreaker API, will make higher quality podcast or radio show production a possibility for those that would otherwise not have digital mixing and arrangement resources at their disposal.