I have a project with a lot of audio tracks that are muted. I'm getting disk-too-slow errors. Is there a way to put these tracks "offline" so that they are not draining cpu/hard disk resources? In Sonar (I've just switched from Sonar to Logic Pro 9), you can "archive" unused or muted audio tracks so that they don't drain cpu or hard disk resources. I can't seem to find a comparable thing in Logic and can't find anything in the manual that addresses this.