First, open your PPT2007 version, and then click on "Insert-sound" can be inserted into the PPT. As shown in the figure:
Second, after inserting will appear a horn sound icon button,
Third, also in the menu bar above will display the play window, above can set up the sound file playback mode, as shown in the figure:
The list box has a preview sound effect, set the slide show volume,
Hidden during show: The sound icon is automatically hidden when the slide is played.
Loop until it stops: when we play the slide, the sound file automatically loops until the PPT is turned off.
Play sound (playback mode for sound):
1, Automatic: is a start into the slide show state, will automatically play the sound file.
2, when clicked: when we clicked the Sound icon button to play the sound file
3. Cross-slide playback: The cross-slide playback option, which is valid not only on the inserted slides, but also on all slides in the presentation.