use mpv as default video player

vifm/.config/vifm/vifmrc

@@ -190,6 +190,8 @@ filextype *.djvu
 
 " Audio
 filetype *.wav,*.mp3,*.flac,*.m4a,*.wma,*.ape,*.ac3,*.og[agx],*.spx,*.opus
+       \ {Play using mpv}
+       \ mpv %c &,
        \ {Play using vlc}
        \ vlc %c &,
        \ {Play using ffplay}
@@ -203,6 +205,8 @@ fileviewer *.flac soxi
 filextype *.avi,*.mp4,*.wmv,*.dat,*.3gp,*.ogv,*.mkv,*.mpg,*.mpeg,*.vob,
          \*.fl[icv],*.m2v,*.mov,*.webm,*.ts,*.mts,*.m4v,*.r[am],*.qt,*.divx,
          \*.as[fx]
+        \ {Play using mpv}
+        \ mpv %c &,
         \ {Play using vlc}
         \ vlc %c &,
         \ {View using ffplay}