This video tutorial is actually part 2 of a 2-part explanation of collaborative editing with the ownCloud client and LibreOffice - the first part will introduce the software and show how to do normal editing - but this is the ‘troubleshooting’ section dealing with file conflicts and the problems people worry about when thinking about collaboration outside of the browser.
Collaborative editing on your Desktop with the ownCloud client and LibreOffice
Watch it fullscreen to see things clearly!