Thanks for your post and apologies to hear you are having an issue getting sound from the Sky Sports website.
Have you noticed the same issue with other streaming sites such as Netflix, You Tube and TV Anywhere? If the sound isn't working on any of them, the issue may be down to the drivers instead of the sites themselves.
Let me know so we can advise where to go next.
Kath_F Forum Team
Tech fan? Have you read our Digital life blog yet? Check it out