as mentioned in the subject, any idea?
Please be aware that much of the software linked to or mentioned on this forum is niche and therefore infrequently downloaded. Lots of anti-virus scanners and so-called malware detectors like to flag infrequently downloaded software as bad until it is either downloaded enough times, or its developer actually bothers with getting each individual release allow listed by every single AV vendor. You can do many people a great favor when encountering such a "problem" example by submitting them to your AV vendor for examination. For almost everything on this forum, it is a false positive.
Wash your computer with a rag soaked in isopropanol held on a two meter stick.
maybe what's needed is a wiki on what to do when this happens, so we can just point people at it, and maybe add this topic to the FAQ
There's a notice on top of every single topic on this board, including when opening the main foobar2000 forum. It's also on top of this topic which darkflame repeated. I think this should be clear and enough. What more would you want to have people be pointed to? If this isn't enough, more wouldn't really matter.