I've found that as long as the server isn't playing musing, everything is amazingly close; apparently all the 'players' have about the same latency.
But VLC has a menu for syncing stuff up, also.
If it's a Line Level source, I'd put small amps in each room, and run then from a central spot.
At one time I had the stereo in the living room running an amp in my room, the basement, garage, and back porch.
Now it's all bluetooth; one USB transmitter, multiple receivers.
I digitized all my music, Vinyl and all.
If you like Rush, either get the FLAC files, or record the vinyl; the CD's suck (Too loud, too much compression) after about Exit Stage Left.
The most recent Music I've bought was on Vinyl.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote