If you import a sound file into your scene, and decide later that you no longer need that soundtrack, delete the audio file from the Volume menu in the Playback Options.
To delete an audio file from your scene do one of the follwoing
in the
Playback Options and expand the
Delete Sounds rollout, where you can view a list of the sounds saved in the scene. Select the sound you want to delete.
The audio file is removed from your scene file.
You can also remove sounds from Outliner, or use commands in the Edit menu on the main menu bar.
