Twitter for websites lets you integrate individual tweets and timelines right in your website or application. These tweets and timelines can display media, including photos, videos and article summaries. They are also fully interactive, allowing readers to interact with them just like on Twitter.com
If you are looking for sound samples on the web and want to add them programmatically to your apps, the Freesound API may be just what you need. Freesound is a collaborative database of Creative Commons Licensed sounds. Users can join Freesound and upload their sound files and share it with others. Recently it also announced that it has crossed 100,000 songs in its database.