where are the message notification ringtones?

[shengchieh]

Any tips or things to try?

1.
Are there any music files extension I should try searching for?  I already tried wav, mp3, ogg, au, and raw files.

2.
Are there any "sound-making" console commands that I can "grep" for?

3.
Are there other groups (beside this forum) I can ask this question?

Thank in advanced for any help/tip.

Sheng-Chieh