Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Being new to MAC (and loving it).  Can I connect this to a television and play movies on the mac and watch them on a tv?  Does this also do sound.?
Document: I use this with my MacBook Air to watch movies and tv in HD on my samsung TV. You better read up on how to troubleshoot if the audio doesn't play. Sometimes I have to restart my computer and you have to adjust settings to get it to work but it does work. Brilliant little device saves me from having to pay for cable. Just this baby and a Roku are all I need.
It worked fine for the first few times I used it but after a couple weeks the picture would cut out unless the cord was positioned in a particular way. Spending 15 minutes positioning it every time I wanted to connect my mac to my tv became very tiresome and I got a new adapter. Would not recommend.
Hooks right up to your HDMI in your TV and uses the mini HDMI on the back of you mac. It a simple plug and play device, DOES NOT connect your audio, you need another cable for that. Also make sure to have your TV set the HDMI port you are using. Slight Mac to TV delay on the screen, but nothing really bad.
I love watching movies or youtube videos, and having this helps a lot because I can connect my laptop to my TV and watch anything.
Trying to save money, I dropped my Netflix. I get free streaming movies with my Prime, so I bought this adapter (and a 25' HDMI cable), so I can watch Prime movies from my Mac Laptop to the TV.
I have a MBP late or early 2011 13&#34; and this works great. I use this to watch youtube or just to play music easily on my TV and play a visualizer. My brother uses this to watch netflix on his tv as well. The design is sturdy  and it looks to be made very well. I chose this one over others because it shipped from a US facility and not from Hongkong.
I got this shortly after buying a macbook air as my work/personal laptop. Of course if you're reading this review you're probably in the same boat as me. You have a TV/entertainment system that uses HDMI but your mac uses thunderbolt. (What a stupid name for video/audio tech)This adaptor does the job, sending video and audio with no issues to the TV. I run it in my man cave so I can watch movies while I'm doing indoor cycling.
This adapter is NOT HDCP compliant and will NOT play HD content you buy on iTunes!What does this mean? HD movies and tv shows etc have copy-write protection in them. HDCP stands for High-bandwidth Digital Content Protection. It is a way for manufacturers to prevent piracy. Not all adapters are HDCP compliant such as this one. So if your like me and have most of your Video library though iTunes then DO NOT BUY this one. I had to return it.
This worked as advertised, changed only speaker settings to external on my computer for sound. Was easy as can be and I just leave it plugged into my TV till I want to watch something. No issues with quality etc. Its a perfect picture with no degrading of quality that I can see whatsoever. I am using an Airbook that is new as of 2013. Matched to a Samsung 55&#34; flatscreen TV..
This is exactly what I needed to connect my new monitor to the Mac Book Air - had no trouble at all!
Answer: Yes it does allow sound as well. If sound does not come right away, go to sound settings and make sure the output is your TV