OK , used UM 3 in anger last night , 99% of the time it was faultless , used in 2 playlist mode .
Glitch 1:
loaded a track into player one , the small wave form was displayed , but the track had disappeared from view in the playlist , it still played though.
Glitch 2:
Occasionally a track what was due to be played next , did not load in the player , no waveform , clicking on the track and opting for “load into player” solved the problem.
All in all very good 
Daryll