Kindle will only take unpublished works??? Are you sure? I've tracked down and purchased a number of stories from the Kindel store that I first heard here on Psuedopod, such as John Haggarty's The Meat Forest and most of Eugie Foster's stuff. Likewise, my series UTOPIATES is available as a Kindel download, but is slated to become an audio drama next year. As long as you own 100% of the print/digital rights it shouldn't be an issue.