A question for the aether: How the hell do I add MIME type mappings to Safari and/or Mac OS X? When I click on .m3u files, it always downloads the file. I’d rather that be opened with iTunes. In the old days, there was the nice Internet Config control panel where you could go and work with the mappings. I have been hunting for the equivalent on OS X and have thus far been stumped. Am I adding a mapping for Safari, for the OS, for both? I just want iTunes to automatically handle these files, and I need help.