Soundtrack Pro is a program which allows you to compose music and edit audio. It includes over 5000 professional instrument loops and sound effects.
Soundtrack Pro has two main modes:
1. Multitrack mode
2. Editing mode
Multitrack mode is where you can arrange the instrument loops and sound effects in synchronisation with the video track. Narration and other external audio sources can be recorded also.
Audio editing mode
Audio editing mode is where you can edit individual audio clips and the waveform of the clips can be viewed. You can analyze the audio clip for common audio problems such as clicks and pops, then the audio problems that you may have discovered can be fixed.