hAudio has been creating quite a bit of exitement around the semantic web recently in particular the hAudio RDFa maping performed by David Lehn and Manu Sporny of Digital Bazaar, Inc.

The Creative Commons Tech Blog describes the proposal in its entry about Metadata work of interest as

...could turn out to be interesting for describing licensed content on the web, all rather interesting.

The Proposed hAudio RDFa maping can be found on the Digital Bazaar Wiki http://wiki.digitalbazaar.com/en/HAudio_RDFa a special well done to Manu Sporny because thanks to his efforts in the Microformats community and the RDFa community has become an invited expert in the W3C RDFa task force exellent news for both hAudio and Manu.
If you want to see a working example of hAudio RDFa as always WebOrganics has Produced an example with one or two tools to work with which can be found at http://weborganics.co.uk/files/hAudio-RDFa.xhtml The example also uses Valid XHTML-RDFa 1.0, something else to talk about at a later date?