Media Box replace link text with simple listen here button?

[luvvvvvit]

Hi i am struggling to find out how to replace the media box preview link text to a button, i have a music website and at the moment the visitors have to click on a word string to listen to a demo track, it looks untidy and i would prefer to have a button there is it possible i would be grateful for your help.

If you need to see what i am talking about it is on my products pages below the add to cart button. http://www.rockbackingtracks.co.uk

[luvvvvvit]

Just to add to previous post i am running zencart version 1.3.8 thanks