I'm programming a little Music Engine for my game in C# and XNA, and one aspect from it is the possibility to loop a section from a song. For example, my song has an intropart, and when the song reached the end ( or any other specific point ), it jumps back where the intropart is just over. ( A - B - B - B ... )

Now I'm using IrrKlank, which is working perfectly, without any gaps, but I have a problem:

The point where to jump back is a bit inaccurate. Here's some example code:

public bool Passed(float time)
    {
        if ( PlayPosition >= time )
            return true;
        return false;
    }
//somewhere else
if( song.Passed( 10.0f ) )
   song.JumpTo( 5.0f );

Now the problem is, the song passes the 10 seconds, but play a few milliseconds until 10.1f or so, and then jumps to 5 seconds. It's not that dramatic, but very incorrect for my needs. I tried to fix it like that:

public bool Passed( float time )
{
      if( PlayPosition + 3 * dt >= time && PlayPosition <= time )
             return true;
      return false;
}

( dt is the delta time, the elapsed time since the last frame )

But I don't think, that's a good solution for that.

I hope, you can understand my problem ( and my english, yay /o/ ) and help me :)