A better way than Ed's suggestion would be to download the Peter & the
Wolf demo from the current Nautilus and try that. I am having trouble with
it because I suspect its setup routine overwrote some of my existing Viewer
files, but others are not. If it plays normally via VIEWER, which is
MicroSoft's real multimedia player, you're okay. If not, forget it.
Also try the Windham Hill CD Audio tracks within NAUTILUS. They never
played for me before but they do on the current release.