WeChat aud.silk file conversions

Hi - Have WeChat audio files in aud.silk format and can’t convert to mp3 or wav. Been researching for hours, tried Audacity and it didn’t work so think it’s a settings issue. Any tips on this? Thanks.

Someone here has found a solution: https://kronopath.net/blog/extracting-audio-messages-from-wechat/

I don’t know anything about that format but sometimes if you have an oddball format the easiest solution is to [u]record it while it’s playing[/u]. That’s assuming you have an application that can play the file.

Really good info on the blog but it’s also a few years ago so hoping this has an easier solution. The audio files have been extracted using Cellebrite.