
Soundtrack Pro is a full digital audio editing application that includes over 5000 music loops, sound effects and audio filters. Soundtrack Pro is designed to be used in combination with
Final Cut Pro, where sequences can be exported as small reference files that include scoring markers. The reference files can then be dragged from Soundtrack Pro's browser to the video pane. The video track includes thumbnails of the video at each scoring marker. Once the soundtrack is finished, it is exported as a mix and can then be imported into Final Cut Pro.
To send an entire sequence directly into Soundtrack Pro you can use the
Send To function in the File Menu:
- Select a sequence in the Browser Window
- Click File > Send To > Soundtrack Pro Multitrack Project

A Save Dialog will appear; the default name is the sequence name with "sent" appended. This is so you do not save over the original media file.
You can find sound effects through the
Search Tab located in the lower right hand pane of Soundtrack Pro. You will find different categories of sounds, including sound effects, instruments, and music loops. These sounds are tagged with keywords to make them easy to find.

Now you can check out
this tutorial to add your sound effects.