AUX Splitter + TV?

So, I’ve bought 2, 2 way AUX Splitters, and I have a PC Surround sound system, Black, Pink and Green connectors. When I plug in the AUX Splitters with the sound system, I just get a horrible crackling sound, I’ve tested all 3 cables from the sound system individually and they work fine on their own, but with the AUX Splitters plugged in. It’s terrible.
Any ideas?
http://www.maplin.co.uk/3.5mm-stereo-to-2-mono-splitter-43086
These are the splitters I have.
http://www.google.co.uk/products/catalog?q=logitech+5.1+pc+sound+system&hl=en&client=firefox-a&hs=rNr&rls=org.mozilla:en-GB:official&prmd=imvns&resnum=4&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1255&bih=655&um=1&ie=UTF-8&tbm=shop&cid=8752630542852075547&sa=X&ei=fovWTsyWMZySsAb2rN2eDw&ved=0CF8Q8wIwAA
This is the sound system.
Answer #1
what exactly are you trying to do with the splitter ?
where are they, are you splitting the
Black, Pink and Green connectors
right on the back of the PC ?
to double each output ?
Answer #2
Im taking the green, pink and black and putting them into 2 splitters.
If you can imagfine plugging 1 splitter into another, to merge them and make 3 pports available.
Obviously this is being plugged into the TV.
Answer #3
sounds like your merging channels, which is the reason for your problem
to merge them and make 3 pports available.
if you have 3 ports (green, pink and black) why is the merge needed
PC out to TV, then TV out to speakers ?
or
PC out to TV & speakers ?
still confused a bit on what your trying to do