KatieM Hi Katie, Sage Traxx has the ability to do Fade outs of all songs at a specified setting you choose, it is a general setting and it is great for many users, but since you only have the one song you want fading earlier you need to do this in your audio editing software like AUDACITY it is free and operates simply on PC and MAC. The one I use on my iPad / iPhone is AUDIO SHARE it is very basic but does all the basics we all need very well it has Trim and Fade, Normalize and Convert, it also loads from Stage Traxx song folder and saves back to it easily this is your best friend to work with ST3 and the fastest way to fix your problem and many more to come.
Hope this helps
Cheers Damir