How to figure out what's making these sounds on my Mac?

Every once in a while, I'm getting random sounds on my Mac but I can't identify what's causing them. It's almost like they are alerts for something, but no applications are displaying I have an alert. I don't have any alerts set, but I know my iPhone is synced with iCloud, so I don't know if that is causing anything.

How do I identify and stop these sounds? One almost sounds like bubbles popping and another sounds like a guitar strings are being plucked.

Added (1). Wow, thanks Matt. Maybe my computer wasn't owned by my company…

Get a real computer.

Which "myMac" is it? IMac with OS 10.8.2? That's how I'm answering.

System Preferences > Sound > Sound Effects > Play user interface sound effects.

This is a very common problem. Very easy to fix. Unplug the computer, unscrew the back panel, pull down your pants, squat steadily over the center of the opening, start to only take a *** on the computer, pull up your pants, throw away the computer, go to bestbuy, and buy a pc. I know some of these directions may seem difficult but this is a common issue so you could probably find a YouTube video examining how to do this in more detail. Hope I helped!

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