If you use high-resolution images to create a slideshow within a drop zone, you may experience intermittent audio glitches when you preview your disc with the iDVD remote control (accessed by clicking the Preview button). The stuttering audio should disappear as soon as the drop zone has displayed each of the photos once. The glitches won’t be present on your final burned disc.
To reduce the possibility of glitches during preview, use images with a lower resolution and smaller file size.