Rok, while we're waiting for Frogman to expound on "studio players" or "pit musicians", as I referred to them; I'll explain how I have pristine sound in every room that I want it, generated from the play list on my computer.
I don't remember what sound cards I use, but I'm sure you've already taken care of that. let's begin with computer out to HRT Music Streamer II to Intelix Audio Balun, Max distance 2,500 ft, out to Cat 6 cable the distance of the house. This is fed to a balun at the receiving end, and interconnect to preamp. The "baluns" are available from "Parts Express", $55., and Cat 6 can be purchased cheaply in your desired length. 2 ft. of your favorite interconnect completes this pristine signal to the pre, and it's as good as a signal 2 ft. from the pre.
Enjoy the music.