Please make sure your have selected the "Canon Pixma iP7250 Printer" template in the "Change Label Template" window of AudioLabel.
When your image is printed on the disc, how far off is the image (in inches or millimeters)?
You can adjust the print alignment dimensions in the "Edit Dimensions" window. For example, if the image prints 0.25 inches to the left, you can add 0.25 inches to the "Left" option in the "Edit Dimensions" window. You can also adjust outer diameter of the disc, and the inner diameter of the center hole.