I want to hook up a 250 watt amplifier to my computer to run 2 125 watt speakers. The amplifier has the regular red and white inputs, but my computers sound card only has a digital audio output. Would i use a regular 1 male to 2 male y'ed rca cable or do i need an adapter to convert the digital signal to analog? I couldnt find any digital cables that split the signal so im really not sure what to do. any help is appreciated, thanks.