The multimedia macro isn't running the Mp3 or Mp4 files on Cloud (15.10.8 used in this case), Pro Macros 1.16.5  Also tested locally on XWiki 15.10.8, Chrome 123, Windows 11, and both files are working 
The multimedia macro isn't running the Mp3 or Mp4 files on Cloud (15.10.8 used in this case), Pro Macros 1.16.5
Also tested locally on XWiki 15.10.8, Chrome 123, Windows 11, and both files are working