The installer worked fine for me for installing into iTunes booted in 9.2.1, and also when installing into iTunes for OSX, booted in OSX. When I downloaded the files they were in a ftp directory (linked from their web page). They downloaded fine and installed fine. There were also copies of 1.5 available in non-installer form, for manual drag-and-drop installation. Works fine for me, more stable than previous versions which have crashed for me in the past. Speed acceptable under OS9, but a little slow under 10.0.4, but that's sure to improve as soon as I get 10.1!