How do I trim a song in iTunes

Select the file. Then click on File-Get Info (or just hit Apple+I). Then select the Options tab. From there, you can specify at what point you want a file to start or end. 🙂

Read this article. I think the key to making this work is #6 in the article. It says to save as MP3, but you can of course save it to something else.

I dont have a mac, but i did mine different:

Click on Song >> Get Info >> Options >> edit song and it worked for me. Im running the latest iOS.