There is a bug in webOS 2.0.1 where if you select a ringtone as your event reminder, it will play indefinitely when you have a reminder pop up to dismiss/snooze. In other words the jingle will loop forever instead of playing once.

I also noticed that if you select "system sound" or a "ringtone", it will sometimes automatically revert to "vibrate" instead of keeping your chosen settings.

This bug occurs in both the unlocked and verizon 2.0.1 versions on a Pre 2.

also posted at palm: [BUG] Calendar - Event Riminder Ringtones - Palm Support Community