Just upgraded from MX2004 on a pre-intel (10.4) to 11.5 on a new intel 10.6 computer. Internal sound cast members play in score but not in the projector. Researched forum and one suggestion was to manually add core audio mix xtra to projector. Is this the answer? How does one do this? The projectors that I have tried to make were either named with .app or now are identified as a universal application in info with no customary .osx that I am used to. I experimented with a simple new file sound project and it worked fine so it it something with this older file. Also, the projector does not identify itself as modified with today's date. Any suggestions?