Apple Pro Training Series: Final Cut Pro 5

Organizing and mixing tracks creates a unified, cohesive-looking and sounding sequence. Although mixing audio tracks together is often the last step in the editing process, there are many times when you need to make important audio adjustments as you're editing. You can work with up to 99 tracks of audio in one sequence, giving you the opportunity to preview numerous music options or other audio tracks before making your final clip selection. There are also additional Timeline controls to help manage or change audio clips, as well as two separate tools for mixing audio and recording your own voice-over.

Audio controls and waveform displays in the Timeline