bweissman welcome to the forum. The best planner/designer and installer I know is Dennis: www.designcinema.com He offers free white papers on the importance of professional planning and installation in home theater.
Try www.lsdinc.com for specialty tools like flex-bits and glow-rods if you want to get wire around the fireplace yourself. You will have to drill thru each stud cavity. www.swhowto.com has diagrams on how to retro and prewire structured cabling and any other wiring. www.acousticalsolutions.com has all the acoustic wall panels you need to control sound and light pollution.
Try www.lsdinc.com for specialty tools like flex-bits and glow-rods if you want to get wire around the fireplace yourself. You will have to drill thru each stud cavity. www.swhowto.com has diagrams on how to retro and prewire structured cabling and any other wiring. www.acousticalsolutions.com has all the acoustic wall panels you need to control sound and light pollution.