Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: No sound when macbook hooked up to tv
Document: Works Great But One Should Remember DVI Does Not Carry Sound Only Picture. So I Bought A Plug In SoundCable and Hooked It Into The Sound Plug In My Computer With Headphones. Problem Fixed.
I received this cable after about 4 days hooked it up to my new retina macbook pro - hdmi out from my mac to my 24 inch Dell monitor. All working great... no problems.
I wanted this cable so I could attach my Sony Blu Ray Player up to a Rear Projection Mitsubishi HDTV with 1080i and no HDMI hookups, just Component and DVI. The cable works great and seems to be made of quality materials. I am not sure if the picture quality is better than the component cables on my television, but it does the job nicely and frees up space for another game system. Sound had to be hooked up separately with RCA cables to work for this application. Recommended!
Hooked up my Roku and new tv with this and it worked great. Long enough and with high quality connectors.
Hooked up my pc to my flatscreen. Now I have internet tv without the cost of paying for a &#34;smart tv.&#34;
i wanted to get my tv hooked up to my computer but didnt want to spend $39 for junk at bestbuy. this did the trick, i have only had it a few days but the quality looks way better than the one bestbuy had for five times the price. highly recommend
Purchased this cable to go from a PC to an HDTV and it works great, but if you are looking to do sound through HDMI it will not work. Had to set up a second cheap amp to run sound off the computer while displaying off the tv.
Wonted to hook up a Roku box to a older Samsung projection tv via HDMI. Worked great Chrystal clear. Had to use the composite cable that came with the Roku box to get the sound to work.
I'm using this adapter cable to go from a dvi connector on my computer graphics card to a plasma tv HDMI input. The picture is amazing campared with the s-video I was using before. Sound is not output with this so you have to add cables for the sound.
The cable showed up right when it was supposed to. It was obviously a new product. However, when I hooked it up to my cable box to my tv, it failed to work. I don't know if it was the cable or the cable box. I'm leaning more toward the box, though. I'll still keep the cable. You never know when you might need one.
Answer: DVI doesn't send sound like HDMI. Have to have external speakers hooked directly up to the source. Had the same exact issue, unfortunately had to get a cheap pair of external speakers.