Alsong audio player was produced by EST Soft Corporation that developed a series of Altools free software.
This is not a simple player, having it installed on your PC you can not only listen to the music but you can also read song lyrics while playing the song. Moreover the lyrics are synchronized to the music. Some songs already have the synchronized lyrics when you start playing them but some not. But this is not a problem as you can add it yourself all you need is just follow the instructions you will see in the Alsong Live Lyrics window. Using the Sync Song Lyrics Editor which will be opened is very easy: first you will need to press the 'Search' button and if the search did not return a successes you will be offered to add it manually. To add Lyrics manually just find it in the Internet and paste to the Editor. But the Lyrics you have added is not synchronized to the music and that is also not a problem, you can synchronize it manually. Just start playing the song and click 'Set Sync Point' button when the line starts.
And the last, you can customize almost all settings of this player.