My Dell computer keeps rejecting my DAC (usb) and returning to its default factory sound outlet ("Realtek High Definition Audio"), which is definitely lower fidelity. I have tried to find someone (here on Maui) competent to set up for me, but failed so far. This has happened with 2 different Teac 301 DACs, so I suspect it is a computer issue. The sounds are already downloaded on a big external hard drive (NOT livestreaming). Any advice appreciated.