Thanks for posting. The LEDR test works fine on my desktop PC. It's amazing to hear the sounds floating over and behind while sitting at my desktop. I'll try later to download the files, create a CD, rip it on dBpoweramp and see how my big M system does. Seems like a lot of work but might be worthwhile.

Roon, Technics SL10 turntable, Meridian 218, Jolida tube DAC, Nuforce STA 200 Amp and passive Swallow Acoustics ALS2 speakers