Can the push notification sound be changed? Just turned it on and it's a little irritating, lol.

Yup you can turn off the sound here - https://forums.d2jsp.org/settings.php?c=35

You can either turn it off or choose which notifications you want to have or not have here: https://forums.d2jsp.org/settings.php?c=35

Ah, so you can't change the actual sound? Bummer.

Was just wondering, thanks guys.

You can’t through the settings but can create a script that adjusts the sound. There’s guides online available on scripting chrome.