@tattooedtrackman - OK, now I understand what you are talking about. If you need to download and install a new driver on your computer, that really has nothing to do with the Rega CD player, per se. The driver downloads and installs on your computer, and it does not transfer anything to the Rega. It just sets up the computer to "speak" the language needed by the Rega to communicate over USB.
Do you have a copy of the driver on CD/DVD disc? If so, put it in your computer optical driver and run the install file found on the CD/DVD. If not, you will need to go to the Rega website and download the appropriate driver to your computer. Once the driver is downloaded, you will run the install file that downloads with the driver and it will install the driver to your computer. Once the driver is installed on your computer, you can connect your computer, using a USB cable, to your Rega Saturn-R. You will want to have the Rega turned off when you connect the cable. Boot up the computer, or at least make sure it is turned on and booted to the OS. Turn on the Rega and select the input you have used to attach the cable (for USB, it is input # 1 and you use the "input button" found on the top/right side of the Solaris remote. You should see tiny "1" along the top edge of the display on the front of the Rega. There is a button along the top edge of the remote, middle button, that says CD/DAC. You will want to push the button to change from CD playback, to playback from the USB connect to your DAC. When everything is correct, the display on the front of the Rega will show the format of the source component. You will see something like 16/44K or similar. If you see the usual CD output "no disk" or the CD track information, you need to push the CD/DAC button again to select the fact that you are using an external source to connect to the DAC.
Once you see that the DAC in the Rega is connected to your source (computer) you can play anything on the computer that make noise, and you should hear it through the Rega instead of through the internal speakers in your computer.
Regarding what to stream, you can start with Youtube. Just do a search for any some on YouTube and it will likely be there. Play it and you should hear it through the Rega. Once you have everything working and want to try other streaming options, you can try Spotify (there is a lo-res free version with commercials). Once you have that working, you can subscribe to the commercial free version of Spotify, or you can subscribe to the higher resolution Hi_Fi version of Tidal. If you want the best sounding streaming service, Tidal is probably your best bet.
From there you can investigate other products such as Roon.
Good luck. You may have to fiddle with this stuff a bit to figure it out of you are not well versed in computers or computer audio. Since you purchased a DEMO (dealer demonstration unit), the dealer you purchased from, or Rega, should be available to you to assist with getting everything up and running.
