A Couple Questions

I have a couple questions for you seasoned veterans. Let me start by saying i have only been using WordPress for a month now so i`m still real green. I am using the 3.5.1 Catch Box Pro theme. 1. I want to have my music to open in a new tab when clicked ? 2. In the testimonials page the side bar is down the middle, how do i get it to the proper side.....right ? 3. How do i install the comments box in the testimonials section ? 4. How do i get ride of the search bar in the header area ? 5. Is there a setting i can change to make the website run faster. It was real good when i started to build it but has slowed as i add content....I am using GoDaddy ? Thank you all that help !! TMS Graphic Signs & Custom Apparel - http://www.tmsgraphicssigns.com/