Have been using TDT with VRD4 for years on Win7-64bit to edit and archive TiVo recordings -- without commercials. Been very happy with useability and results -- especially VRD -- love it!. Switched to MAC and looking for an editor as user-friendly and effective as VRD -- no luck so far. On MAC, iMovie and Handbrake will not recognize .TiVo files; Toast 11 will not accommodate easy commercial clipping. Just downloaded KMTTG and will play with that, but still looking for a MAC OSX equivalent to VRD. Emailed Dan at VRD but never got a reply. Would LOVE to see a MAC version of VRD, but in the meantime, any recommendations/ideas??