Originally Posted by The BlackBerry Kid
if the tone is on the media card, i could possibly an issue with that.
Yes, it's on the media card. I don't ever remove it and can access other data there, so I imagine that it's properly seated. Maybe the handheld loses contact with the card for some reason and substitutes another sound file. I'll try moving it to BB memory and see if it pops up again. Thanks for the suggestion on where to look.