The
new release of the TYPO3 extension BibSonomy CSL supports exports of publication in the Endnote citation style. In the setup of the front-end plugin you can now enable (next to links to the abstract, to BibTeX, or following a publications URL) also a link to the Endnote export.
Upon request, the exported data will be fetched directly from BibSonomy/PUMA using AJAX. The screenshot shows how a publication might look like on your homepage, with Endnote export enabled and requested:
Happy tagging
Sebastian