Importing mp3 in container field

Hi there, I have a container field on my layout page, I go to browse mode, and then drag & drop my mp3 into this field. Then I set up some text on the layout and right click to specify button where I then do the select field and have it choose that container field, and check the box where it says perform or whatever. My problem is that I then put my layout in browse mode, and click the text, but I have to have that container field on the layout for the script to work properly. If I try to remove the container from my layout then the script doesn't work. But I am distributing this to lots of people, and don't want them to see the container field. So I made it really tiny, and then made the background color on my text the color of the layout (white), and then put the container field behind my text field...but when in browse mode, and I click the text, the container field does come to the foreground, and while it's hardly noticeable, I don't want it there at all...Any suggestions???

Thanks!!