The current version of Fiio Music I have is 3.0.7 which came installed on my new M11+. I'm willing to try a beta version, so started to download the one from your link. However, I stopped when I got the following message
Google Drive has detected issues with your download
This file is too large for Google to scan for viruses. Would you still like to download this file?
This file is executable and may harm your computer.
FiiO Music Beta21092302.apk (77M)
How can I be sure this file is actually from FiiO and safe ?