Or so it seems. This ringing sound started to become apparent about a week ago under high A/C settings. It only appears when stopped but when driving, windows down, i can not hear a thing. I don't think it's anything serious but it sounds like un-lubed metal spinning. I've attached a video to see if anyone can distinguish the sound, where it comes from and possible the solutions.

i'll breakdown the scenarios from the video (keep in mind the engine has been started already and been driven for about 10 miles). Apologies in advance for filming in portrait haha

<iframe width="420" height="315" src="https://www.youtube.com/embed/QiCBi6Y3AJ0" frameborder="0" allowfullscreen></iframe>

00:00 - 00:10 - A/C fans off. you can hear the ringing intermittently.
00:11 - 01:10 - A/C to about "4" setting and the ringing becomes constant. I do a walkaround to try to find where it's coming from.
01:11 - 01: 26 - Stepping on the gas with A/C still on the "4" setting. whenever i rev the engine or just drive (when the rpms are high) the sound goes away
01:30 - 01:40 - i turn the A/C off again and the sound breaks up until i finally turn the ignition off where it appears once again.

Since it sounds like a pulley or belt, i sprayed some belt dressing on each belt drive but to no avail. Is it the a/c compressor? before i bring it to the shop, i'd like to see if you guys can help. thanks!