Didn't trust my eyes, today. It seems Coolplayer is in development again (elders here will remember) :
Release Notes
Version 217
+ Now loads .m3u playlists using "Open URL"
+ Fixed using -h,-?,-help on the command line killing existing instances
+ Fixed using -/+showplaylist on commandline messing with toggle playlist
+ Fixed issue when seeking if coolplayer is paused
+ "Just add files" is back
+ Improved options dialog usability (Keyboard input and tab navigation now works and in correct order)
+ Menus now have keyboard accelerators for easier navigation (underlined letters)
+ Fixed length of WAV files not showing in playlist
+ Fixed non valid files being added to playlist (such as .txt)