Trystan
Using Chromecast gets over the sound problem as one is then using the TV sound. I am quite happy with my Chromecast, use it chiefly for IPlayer and the like and also for films or TV shows not on players purchased, either downloaded or streamed, to the Hudl2 from, in my case, GooglePlay (other film purchase sites are available!). Needs a spare HDMI connection on the TV or connect through an HDMI switch. Good purchase for about £30.
maxD