hey leejsmith, I also had alot of problems at first with noise, if you use a walkman instead of your pc you can see if its in your amps or the pc. I had some of both" alt noise and harddrive/ cdrom noise" , I ran 4 gage wire to the rear where my amps are "about 1500 watts
" and I did both + and - lines and used a 1 farad cap that helps to filter noise also, then I used a ground loop isolator on my highs, on the pc side I use a soundblaster mp3 pro with usb run back to the amps, this way theres less audio cable to pick up any noise, one more thing that helps is I set my pc sound level to max and then set my amp gain to were its just below distorting " the higher your amp gain the more the inputs on your amp act like a mic. hope this helps
. as for radio support in the software were working on a usb tuner now also XM radio too. We have so many things to do as add-on's we'll be busy for the next 5 years, lol