How do I turn off the Audio included in "Epic Drama" so I can hear my own soundtrack?

This is just a guess, because I haven't done it, but I believe you have to use the "convert to project" option first.

It's under "File"

Convert to Project.

After you get it converted to a project, there are audio editing tools that you can use to mute one track and add another. The original audio will be associated with the video clip itself. The music will be in a track below the clip. I hope that helps.

You need to unpin the music track (right click on the purple box around the video clip and select - unpin music track. Once unpinned you can right click again and select 'delete selection' which will delete the track without deleting the rest of your work. Hope this helps.

Ok, well to begin with when you unpin a music track it goes from 'floating' to 'pinned' - floating is the opposite of pinned (if something is not pinned down it is floating), so obviously you cannot unpin something from the floating box because it is already unpinned.

But you are on the right track - just wrong screen. After you have unpinned go back to you main movie editing screen - you will have noticed the purple box around the outside of your movie in the timeline has now turned green. This green box is the sound track you want to delete. This should now be easy - just click once on the green box to select it (it may look like you have selected the entire project but you haven't and then hit the 'delete' button on your keyboard and you are done.

Right...um yeah now you have me completely confused - no audio at all - I would try reloading your video clips into the clip (just grab them out of the clip library and place on top of the clips that have lost thier sound and hit 'replace' when given the option - otherwise you could try right clicking on the clips that have lost thier sound and see if the music is simply muted. My understanding here is that when you use the automatic 'trailer templates' they mute your soundtrack to emphasise their music.

I wonder if what you are trying to achieve is not what the trailer templates were designed for - would you be better building a video from scratch and learning about effects/transitions as you go? - Your call.