Fixed floating point comparisons

VocaluxeLib/Menu/SongMenu/CSong.cs

@@ -988,7 +988,7 @@ namespace VocaluxeLib.Menu.SongMenu
                 }
             }
 
-            if (PreviewStart == 0f)
+            if (Math.Abs(PreviewStart) < 0.001)
             {
                 if (Medley.Source == EMedleySource.Calculated)
                     PreviewStart = CBase.Game.GetTimeFromBeats(Medley.StartBeat, BPM);

VocaluxeLib/Menu/SongMenu/CSongMenuFramework.cs

@@ -616,7 +616,7 @@ namespace VocaluxeLib.Menu.SongMenu
 
                 float startposition = CBase.Songs.GetVisibleSong(_Actsong).PreviewStart;
 
-                if (startposition == 0f)
+                if (Math.Abs(startposition) < 0.001)
                     startposition = CBase.Sound.GetLength(stream) / 4f;
 
                 CBase.Sound.SetPosition(stream, startposition);

VocaluxeLib/Menu/SongMenu/CSongMenuTileBoard.cs

@@ -423,7 +423,7 @@ namespace VocaluxeLib.Menu.SongMenu
                     _MedleyTagIcon.Visible = song.Medley.Source == EMedleySource.Tag;
 
                     float time = CBase.Sound.GetLength(_SongStream);
-                    if (song.Finish != 0)
+                    if (Math.Abs(song.Finish) > 0.001)
                         time = song.Finish;
 
                     time -= song.Start;