Q: some tv shows on itunes play sound at the beginning and stop working halfway through

Some TV shows that I buy on Itunes will work sound and video wise and then half way through sometimes sooner the sound will cut out and the video will just continue going with no sound. I checked around the internet and nothing is really working. My computer is on windows 8 and i'm running the most current itunes update, Itunes 11.3.0.54