The Import File browser appears.
The selected audio file appears as an audio clip under the Soundtrack.
The audio file automatically appears as a waveform in the Time Slider and as an audio clip under the Soundtrack in Trax.
See Soundtrack.
To hear audio clips present in Trax
 -click
            in the Time Slider, and select Sounds > Use Trax
               Sounds from the menu that appears.
-click
            in the Time Slider, and select Sounds > Use Trax
               Sounds from the menu that appears.
         The audio clips in the Trax Editor now play during animation playback. Also, only one audio clip at a time plays and the play priority of audio clips goes from the top-most clip to the bottom-most clip. See Audio clips.
To remove audio clips from the Soundtrack
 .
.