This was supposed to be a hidden album which is linked to from various songs in Quarantine. If somebody clicked on the link, they will be presented with these 4 sound files which are less music and more an experiments in atmosphere.
The FM audio includes a sample from 96.7 FM mystery in Portland Oregon. Where people reported strange sounds happening sometimes on the radio station. Here is an LBRY link to a video about this mystery by Nexpo.
We all heard by now that the situation in Hollywood is not very good at the moment. A lot of Visual Effects artists are overworked and underpaid resulting in some atrocious CGI like in The Flash 2023. Studios even considering replacing those overworked and underpaid VFX artists with AI technology. Because it can make better images and complain less about its conditions at work.