In this latest episode of the Dan & David Show, David gives Microsoft kudos for issuing a special covenant not to sue developers , including open source developers, who develop software that supports its XML-based Office file formats and speculates on how the Commonwealth of Massachusetts might respond to this move, in the context of the Open Document Format controversy. We also talk about the impact of AJAX and Flash on office applications and about Sun's ongoing moves to make its software free and open source in hopes of creating demand for its services and hardware. David also sees a glimmer of hope in TiVo's "watermark" approach to the DRM problem. The podcast can be delivered directly to your desktop or MP3 player if you're subscribed to our podcasts (See ZDNet’s podcasts: How to tune in). For more information on the topics covered, search our blog.