Interesting, I have a external USB connected to my A/V rack`s lap-top 40 MHZ. scope for checking my L/R sources/ feeds and watching color Lissajous X/Y displays on the 1 of 4 selected video channels that feeds 5 separate room`s flat screens + the living room`s 120" projector screen for wow factor entertainment purposes, via a SVGA distribution system fed from the rack`s lap-top`s HD-15 output port.
Look Ma !! No CRT`s to weaken or fail, or center display burn spots, and since the lap-top is usually running WAV. music anyway, also feeding the whole house audio distribution and NWS radar, it was a no brainer to buy a decent PC scope for routinely checking the system, or trouble shooting it.
Why not wow your guests with XY stereo phase visual displays("exploding galaxy`s") of the music being listened to?
As visually captivating/engrossing as staring at a fire, or waves on the beach, alcohol and or smoke seems to enhance the pleasure with fireworks display appreciative noises, often heard from some guests when "observing" some of the better Spacial stereo musical selections patterns, like Pink Floyd`s DSOTM..
Sure beats watching same on a little green 4~5" CRT on a bench scope, Marantz or a Mac MPI.
Back in the late nineties to get a similar display, I would pull out my backup Tek scope, and setup and align a 3 chip Sony composite video camera up in front of the scope and feed it into my house`s composite video distribution system for the Lissajous display..
This current method is so much better display quality, and is easy peasy.
Who says you can`t also watch, as well as listen to your music ?
Enjoy it all as you see folks.
Kind regards, OKB