Please, Add to favorites function.(see attachments)
I think, this 'favorites function' is more efficient than playlist tab function'.
Because I do not speak English well, it is difficult to describe the favorite function.
It is registered in the favorites a music file(mp3, wma file, etc.) or a playlist file(pls, m3u file, etc.), for example like in 'Billy player'.
If you register a playlist file in the favorites, it performs a function similar to the 'Playlist tab'.
And if you set a hotkey(Ctrl + 1, Ctrl + 2, etc.) to registered playlist file, you can use this feature effectively.