You can try installing the latest beta version of Anki (for windows 10) which uses a new player (mpv instead of mplayer): https://betas.ankiweb.net/ (if it still not working, you can try installing the alternate version)
You can try installing the latest beta version of Anki (for windows 10) which uses a new player (mpv instead of mplayer): https://betas.ankiweb.net/ (if it still not working, you can try installing the alternate version)