Hello,
I've been using MJ for a few years, and I could never get ASIO output to work. Now that I see ASIO is disabled in the new version of MJ, I uninstalled MJ and installed the MC trial. It's still doing the same thing: It will play the first track fine, but when I stop it and try to play another track, it either crashes or gives me the error message "Playback could not be started on the output 'ASIO' using the format '44100 Hz, 64 bits per sample, 2 channels. This output format may not be supported... make sure your system has a valid sound playback device..." etc. It will play the next track fine on its own, but if I switch it, it crashes.
If I can get ASIO to work then I will buy MC, as my soundcard (Line6 Toneport UX1) has a native ASIO driver. It works fine with foobar and other programs that use ASIO.