To embed the Windows Media Player 9+
var ax = createControl("WMPlayer.OCX", 0, 0, 200, 200);
ax.activex.url = "c:\\my.wmv";
ax.activex.controls.play();
To embed the Windows Media Player 6.4
var ax = createControl("MediaPlayer.MediaPlayer", 0, 0, 200, 200);
ax.activex.open("c:\\my.wmv");
ax.activex.play();
The reference of the Windows media player can be found at here
To embed the Real Player
var ax = createControl("rmocx.RealPlayer G2 Control", 0, 0, 200, 200);
ax.activex.src = "c:\\my.rm";
ax.activex.DoPlay();
The reference of the Real Player can be found at here
To embed the QuickTime Player
var ax = createControl("QuickTime.QuickTime", 0, 0, 200, 200);
ax.activex.setUrl("c:\\my.mov");
ax.activex.play();
The reference of the QuickTime can be found at here
If you want to use these ActiveX controls directly in action script in Flash 8, you would have to wrap them in action script classes.