Cutting and Trimming Audio in Audition
Step 1: Insert Audio into Multitracks
Step 2: Move the yellow needle to the desired point to split or cut the track.
Step 3: Select the razor tool. Line up the tool with the needle at desired point of the cut and click. This will cut the clip into two pieces. You can then select and delete the pieces as needed.
TIP: If you are just looking to just trim some time from the beginning or end of the clip, you can hover over the end and wait for a red open or close bracket to come up (depending on what which end you are trimming). You can then grab and drag this to trim the clip as much as you need.