Not sure what the proposed "RP simpler solution" is. I use a laptop and browser to the latest RP site and choose FLAC in the settings. I use the same laptop for ripped CDs/JRiver to USB DAC and noticed CDs are playing at 44 kHz and RP FLAC is playing at 48kHz. To me, RP-FLAC isn't exactly CD, but sounds very good and is easy on the ears.
Glad you're enjoying it.