When sound files have to be played, Sound.au3 UDF comes to our mind immediately. It is simple and easy to use. But WMPlayer.ocx has a lot more features: it can play video clips and flac audio files, which Sound.au3 UDF cannot. Below are quick and dirty comparison of codes utilizing two different methods. Both of them do exactly the same  thing: play back a playlist of audio files, with a simple slider control. 1. Use of Sound.au3 UDF #include <GUIConstants.au3> #include &l