The sound on my computer hiccups every minute - it's like a blip or a bump for about half a second and then it comes back on.

Any ideas on what it might be or how I can fix it? It happens across the board on all my applications - iTunes, Spotify, Chrome, etc.

There isn't much besides a failing hard drive or other hardware fault that can cause those symptoms. Run the Apple Hardware Test, or just take it to an Apple Store for testing.

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