Ok then, my computer based totally internally WAV. ripped stored music server, is a 24/7/365 running purchased new in 2010 Gateway laptop that I upgraded the spinning drive to a 1 Terabyte SSD, and Win 10 Pro from the laptop`s original top tier 7 OS, increased the memory to 8 Gig.
The laptop`s SSD has currently 13,273 WAV. ripped tracks and being added more ~ CDs almost every month, played with MS`s included Win Media Player.
The laptop is connected to the internet for NWS provided radar loop, and no other internet connection desired, plus a external USB based PC oscilloscope to X/Y (Lissajous display) monitor all L/R audio that passes through the A/V rack`s Mc. C-37 preamp.
Before I set this laptop for playing internal/independently of outside sourced music, my only digital music source was my OPPO UDP-203 Universal player, via its front panel USB connector with a 1 Terabyte flash drive, using it`s S/PDIF coax out to feed my DAC, and that was my digital music SQ reference, and it sounded perfect to my ears..
So I got to thinking that I wanted the now # 2 digital music source (the laptop) to have the same, if not very, very close SQ as the OPPO was providing playing the same WAV. ripped music`s SQ, so to be able to readily be A/B the 2 digital music sources to compare for tweaking and improving the laptop`s rendering of the duplicated music files, I researched to find a highly rated USB to S/PDIF converter, and I did, it was on sale at Crutchfield, as the manufacture was discontinuing that model (Peachtree X1).
Anyway, I had purchased a very HQ S/PDIF 4X1 remote controllable switch which allowed me to cue up identical tracks on both digital music sources and A/B them to compare the laptop/X1 configuration to the OPPO players SQ, to look into removing the slight, but still annoying digital glare in the laptops music delivery, plus I now had not only a duplicated digital music playing source, for redundancy, but I could now load up new acquired WAV. ripped music into each source, and being able to keep my all day playing music running with no down time by switching between the two sources as needed when adding new WAV. ripped music to both.
This setup turned out to be highly desirable, and after tweaking the laptops via several iFi brand inline S/PDIF & USB re-clocker/filters, and some other music laptop audio improvement tweaks/upgrades, I now can not tell the difference between the 2 different digital music sources fed into my Pro Ject brand pre box S2 DAC.
The laptop`s UVGA set resolution (1400X1050 lines) video output is sent to a 8X1 active video distribution amplifier that sends the computer`s display to seven rooms of my house`s flat screen TVs, so I can easily see the radar, and whatever music that is playing`s Metatag information, if I wish to turn on that`s room`s TV, and the laptop`s wireless track ball allows me to lay in my right around the corner from the laptop master bedroom`s bed and control the Media Player`s various functions very easily, and I enjoy that every evening for several hrs. mildly stoned before falling asleep.
I only wished I went this independent of the internet and totally inhouse sourced digital music route sooner than the a little over 6 yrs. ago when I finally decided to make the leap, and am happy with all aspects of my digital music setup and can`t see the need to change anything about it`s electronics and configuration..