It'll probably serve you well to unhide file extensions in File Explorer. Open up a folder > Hit the three dots > Options > View > Uncheck "Hide File Extensions" (or something of that nature.). It'll save you from experiencing stuff like this in the future.
Wait really? where does pixabay say that? if that's true any tips on places to find music that can be used legally with hentai games?
You cannot use Content in any immoral or illegal way, especially Content which features recognisable people.
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. Pretty sure this is the Canva influence over the platform now.
That being said, there are a decent number of sites that allow usage with adult content. The biggest being FreeMusicArchive. Just pay attention to licenses. You'll want to stick with CC-BY 1.0 (Public Domain), 3.0, 4.0, and anything with ShareAlike should be theoretically fine. You'll want to get familiar with attribution styles as well.
It's always smart practice, for anything with a CC (Creative Commons) license, to screenshot the page where you got it with the license clearly visible and save it. This covers your ass in the event that an artist decides to pull it from the public domain and come after you with Copyright Infringement. A CC license is irrevocable, and in most cases, showing them said screenshot will remove any ground they have to do so. It's unlikely to happen (sans YouTube), but it's always smart to have that layer of protection.
If you're looking for something paid,
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is rather cheap and one of the few paid platforms who openly allow usage in adult content. It's basically that or paying $2500/year for Universal Productions Music or AudioNetwork.