have been doing some more research and found this, i think this will solve all my problems.
hi there, have been googling for most of the day, my surr sys has only hdmi output, but has optical in and aux (ps4 and laptop). so what i want to achieve is to run my amplifier with 2 speakers alongside the surround sound system. running it through the tv as an output wont work because of the delay in the sound (sounds like an eco), so the only answer i can think of is getting a hdmi to analogue audio converter http://www.ebay.co.uk/itm/HDMI-V1-3-HDTV-to-Component-YPbPr-Converter-1080P-Adapter-with-Analogue-Audio-/301856378802?hash=item46480acfb2:g:V1kAAOSwX~dWpS~3 and using rca's to my amp and hdmi straight to my tv. so as all the inputs will work through the hdmi out? is this possible or true, love someone to shed some light on this. Thanks.