1. From the main menu, select Music | Edit Music Database
2. Select a music file
3. Bring up the Music Player
4. Click on the Music Player's Loop tab.
5. Play the music. If desired, you may use the mouse to drag the scroll bar to set the music position.
6. When the music reaches the desired position, click the 'Set' button that corresponds to either 'Loop Start' or 'Loop End' as appropriate.
7. After both the loop start and loop end times have been set, click the 'Test loop' button to listen to the jump. If the looping sounds bad, re-do the previous step, or manually edit the displayed loop start and loop end values.

Notes:

1. Be sure to do the above steps within the 'Edit Music Database' portion of the program, or else the loop start and loop end values will not be saved.
2. I usually listen to the start of the music, then scroll to the end, and set the end loop value first. I usually click the 'Show position' button on beat 1 or beat 4.
3. Setting the loop within a music section without a lot of melody helps to make the reset transition less noticeable.
4. I've found that the best place to set the start loop position is immediately after the Opener, and the best place to set the end loop position is immediately before the Closer. (that is, for a typical singing call of the form OFFMFFC [O=opener, F=figure, M=middle, C=closer), set the loop values so that the music loops within FFMFF).