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I would like to change system sounds for certain events in Mac OS X.

How do I do this?

I want to replate "Basso", "Bottle", "Submarine" and another sounds to my own.

The types of sounds: when mail comes, when iCal notification fires, when in terminal i press tab etc.

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Do you mean Mac OS 9, or do you talk about OS X ? – Pierre May 24 '10 at 19:38
What sort of events? – Doug Harris May 24 '10 at 20:08
I mean Mac OS X Snow Leopard – AntonAL May 25 '10 at 4:24
You should accept some answers – Mark May 25 '10 at 9:32
up vote 3 down vote accepted

Apple document this in Apple knowledge base.

You add a file in .aiff format into ~/Library/Sounds for just you as user requiring normal permissions or if you want to share the sound with other users in /Library/Sounds which will require admin permissions. (Never change things in /System/Library as this is for Apple's use only and will get altered by software updates. ) If you are on a network then /Network/Library/Sounds might also work

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Mp3 files also work (at least as far as I've tested in Snow Leopard) – Kio Dane May 26 '10 at 14:02
Mark, point taken about losing the sounds to an update, appreciate the explanation. – JRobert May 26 '10 at 17:31

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