I can't merge audio files for some reason (solved) This is in one particular project running at either 32 or 64 bit. I get a dialog box asking if I want to mix down the audio region in either mono or stereo. Really weird. I open up a different project and it works as normal. I haven't tried deleting prefs yet only because I think it's just in this project. It happens on any track I try it on. I've restarted the mac and tried the glue tool. I get the same message with the glue tool as well. I did a "save as" and am getting the same thing. I'll keep plugging along on this but thought maybe one of you logic wizards had an idea. I have had this happen before randomly but then it goes away pretty quickly.