When I am attempting to time stretch a clip on the video track on my timeline, I get a "break" in the soundtrack -- there's a blank space with no music. Why is that, and how do i stretch a few seconds of a video clip without affecting the soundtrack in any way? I'm using Premiere 13 on a Mac.
Please give more details. I cannot confirm what you have described.
What are your Time Stretch dialog settings - Speed % and duration?
What type of soundtrack are you using - a regular one or one of the Music Scores where you can adjust the duration without affecting the music arrangement?
Could you show 2 screenshots - one before and one after.