Hi, cable arrived! It's a good professional PROEL but I can't feel a huge difference between this connection and the one I made with a low quality cable. Basically, the problem is that the sound I get on the PC is "muffled"; it isn't clear as Casio sound. The keyboard sounds like a band playing live with real instruments, while the recording via aux-audacity seems..a recording!
May it be the integrated sound card of my pc? Can I have a Casio-like sound on the pc if I buy a good one or there would always be difference?