I use play-alongs all the time. What works for me is to convert the sound to an .mp3. Playing that thru earphones, but I run mine thru a sound board and an amplifier. Most of the videos on my YouTube channel that are actually of me are using pre-recorded accompaniments.
David Bjornstad
1923 Conn New Wonder 86I, Bach 6 1/2 AL
2018 Wessex EP100 Dolce, Denis Wick 4ABL
2013 Jinbao JBEP-1111L, Denis Wick 4AM
2015 Jinbao JBBR-1240, Denis Wick clone mouthpiece of unknown designation
Cullman (AL) Community Band (Euph Section Leader)
Brass Band of Huntsville (2nd Bari)