There are two ways to load audio files, through the Menu bar and through the Transport controls.

To open an audio file using the Menu bar:

1. In the MotionBuilder Menu bar, Select File > Import Audio.

   The Import Audio file browser appears.

2. Browse for a .wav or .mp3 file.
3. Click Open.
4. The file is loaded in your scene and the Audio settings appear in the Navigator window.

To open an audio file using the Transport Controls:

1. Right-click the Action Timeline in the Transport Controls and select Audio > Open Audio Clip from the contextual menu.

   The Import Audio file browser appears.

2. Browse for a .wav or .mp3 file. Click Open.
3. The file is loaded in your scene and the Audio settings appear in the Navigator window.
   Note

   If audio files are already in the Asset or Scene browsers, simply drag them into the Viewer window.