[quote user="Andrew Everard"]
If the HDD recorder is outputting to the TV via component, then yes you need an audio connection to the TV, too, if you want to watch recordings with sound via the TV's speakers. RGB Scart carries audio, but component doesn't, so you can either run the output from the recorder to the TV on the Scart connection or, if you want to use component, run a pair of analogue audio cables from the recorder's output to the analogue audio input on the TV.
You should also check whether the Humax is actually outputting sound via the Scart connection - the simplest way is to connect the Scart straight to the TV. It could be that selecting the digital audio output on the Humax has somehow switched off the analogue out via the Scart.
[/quote] Thanks Andrew, I shall attempt this. It's my father's set up - he hasn't a clue. It's just a pain that I live a fair distance away and I'm buying cables and playing around with his system. So there is a chance that once I have got him to connect analogue audio cables from HDD to tv, there will still be no sound because the Humax has not recorded sound? I have to say that it's a confusing system and I've advised him that when Humax bring out a Sky + version of the Humax Freesat box, he would be better off selling his Humax box and HDD dvd player and buying a cheapish upscaling player and the HDD Freesat box.