Basically i was running some Logitech x230's (2.1) for a few months, they were great, never had one problem with them, now i wanted something better so i got some x530's (5.1), agian these are great, really good sound etc BUT it keeps hissing every now and agian, and its picking up the radio by the sounds of it, its really really p*ssing me off now! its not like its faint either its like im playing something when im not

Anyway i was led to believe this was happening due to crappy onboard sound, so i went and got a "Creative X-Fi Extreme gamer" sound card, which is one of the all singing all dancing affairs, and guess what, i still get the "noise"/ interference whatever you want to call it
Obviously the sound is much better when playing music and what not but the hissing and random radio playing is still there.

I red on Creatives forum that noise is always there but you should adjust your systems volume so that the noise is not audible but im having a job doing that the hissing and stuff seems to stop when i turn the volume knob up so what i did was turn it up and then go into the master controls and turn it down a touch, that seems to have stopped it for now but what the hell is this, i know there not "THE" best speakers but there good arent they? and i got a decent soundcard now but still im getting this?

Im hoping some sound "guru" can enlighten me on this