I'm revisiting this problem, as my clarinettist colleague has been persuaded to use my RealTrack-enhanced versions of our repertoire, synched via Dropbox, as the definitive list, but when he tries to use JukeBox for practice he gets crashes and missing voices in the songs.

He gets very tetchy when this happens, and blames me for interrupting his practice sessions, but I think it's probably happening because he's inclined to set the JukeBox to random, and to click the next button if he's recently practised the song he's offered.

If I can calm him down enough to set RealTracks options as if for a slow computer ("But my computer ISN'T a slow one!"), I'll be able to test this theory.

Incidentally, I've just upped the memory on my elderly laptop to (the maximum) of 2G, but before-and-after stop-watch timings of "Play" and "Generate" have demonstrated absolutely no benefit. As the CPU usage goes up to 100% when generation is taking place, I conclude that the problem is not memory size or disc speed but a lack of raw CPU power.

That's fifty quid that could have bought me a lot of porage!

It would be helpful to have a more elegant way of dealing with the speed of play-back overtaking the process of RealTracks generation, but I suspect that I may be a lone voice here.

Incidentally, Mac, how do you generate the next song without the risk of it's starting to play before you want it to? I can't find a "generate-but-don't-play" button.