Other Plug-Ins : Other AudioSuite Plug-In Utilities : Reverse

Reverse
The Reverse plug-in replaces the audio with a reversed version of the selection. This is useful for creating reverse envelope effects for foley, special effects, or musical effects.
 
To reverse an audio clip (or selection):
1 Select the clip you want to reverse.
2 Choose AudioSuite > Other > Reverse.
3 Ensure that Use In Playlist is enabled.
4 Click Render.