[Jerry]

Here's how I would do that.

m1 = viz.add('c:/winnt/media/canyon.mid')
m1.loop()
m2 = viz.add('c:/winnt/media/flourish.mid')
m2.loop()


def onkeydown(key):

if key == '1':
m2.stop()
m1.play()
if key == '2':
m1.stop()
m2.play()