I’m surprised it didn’t alert when you downloaded it, unless it was compressed and only alerted on installation ?
Downloaded the compresses executable audacious-4.4.1-win32.exe and that was OK, but would almost certainly alert when gdbus.exe executable was extracted/installed - I’m not sure if avast would be running inside the windows sandbox.

Whilst older versions of gdbus.exe may be ok, however an update may have introduced something that is considered suspicious.

If you submitted it for analysis from the Quarantine (?), give it a few days to be analysed and scan try to Restore it from Quarantine, if it is still considered malicious Avast would alert again.