Scott Schiller’s SoundManager 2 lets web developers load, play and control sounds via Javascript. SM2 is an attempt at providing the sound API which Javascript has been missing. It's a library which wraps and extends Flash's sound capabilities, bringing cross-platform audio functionality to Javascript.

Demos:

• Page as a playlist: (Muxtape.com-style UI) with a few themes, load/play progress, scrub/seek within track, timing etc.
• Play MP3s in-place demo.

More info: SoundManager 2

Source:→ Ajaxian