Being new to Apple, I'm not used a lot of the sounds and things. For example, there are sounds that I hear every so often while in the middle of doing something. I thought it was Photoshop autosaving, but Photoshop is closed. I know what the notification sounds for mail and alerts are, so it's not them. The ones I'm referring to sound a bit like a 'woosh' or 'swish' - sort of like the sound a sword makes when being swung fast. Does that make sense? And do you know what I'm referring to?