"Ding" - By HPL3

[Mudbill]

Could it simply be that the system thinks you're trying to type a message when using the WASD controls, but finds no textbox to place any text, and complains about it? At least that is a very common cause for a "ding."

If the devs use Windows 8/8.1/10 then I don't think they'll notice the repeated "ding" because the sound used in those systems is much softer in the beginning compared to the Windows 7 one. If you try repeating it on the newer systems, you'll only notice 1 "ding" at the end, after releasing the key.