Yes, I know how a disc player can work with various types of input, I have several
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Personally I use both thumb drives as well as streaming to them via dlna, but keep my rips in flac format. Good luck on the digitizing the vinyl thing....I started to do that a few years ago but found it not worth the time investment....if I really want to hear something particularly on vinyl I just play it, but don't play much vinyl these days otoh. The only dsd I bother with are multich SACDs.
Back to the player with dsd input on the thumb drive.....do you mean it
doesn't sound like it should? If so, what is wrong?
What about playing files via hdmi cable from your computer directly to your avr? Or even to the disc player....