[muine] OnSongChangeEvent sometimes called twice

[David Cournapeau <cournape gmail com>]

Hi,

    Having noticed that the muinescrobbler often fails
to submit my songs, I was studying its source to correct the bug. I
actually found a behaviour of muine which looks weird.

    The following plugin reproduces the strange behaviour

"""
using System;
using System.IO;

using Muine.PluginLib;

public class TestPlugin : Plugin
{
     private IPlayer player;
     private ISong   currentSong;

     public override void Initialize (IPlayer player)
     {
          this.player = player;
          
          player.SongChangedEvent +=
              
new SongChangedEventHandler (OnSongChangedEvent);

          player.TickEvent +=
               new TickEventHandler (OnTickEvent);
     }
     
     private void OnSongChangedEvent (ISong song)
     {
          if (song == null) {
               return;
      } else {
           currentSong    = song;
      }

          Console.WriteLine ("GabouPlugin: Started playing {0}", song.Title);
     }

     private void OnTickEvent (int position)
     {
         
Console.WriteLine ("GabouPlugin: Tick Event at position {0} for song
{1}", position, currentSong.Title);
     }
}
 """

Normally, if I understand correctly, once onSongChangedEvent is called,
each OnTickEvent corresponds to the new song. That's what happens with
some of my mp3; the output is then:

"GabouPlugin: Started playing My Song
GabouPlugin: Tick Event at position 0 for song My Song
GabouPlugin: Tick Event at position 0 for song My Song
[snip]
GabouPlugin: Tick Event at position 120 for song My Song
GabouPlugin: Started playing Your Song

GabouPlugin: Tick Event at position 0 for song Your Song"

So far so good. But with other audio files, what actually happens is:

"GabouPlugin: Started playing Slip
GabouPlugin: Tick Event at position 0 for song Slip
GabouPlugin: Tick Event at position 0 for song Slip
[snip]
GabouPlugin: Tick Event at position 378 for song Slip
GabouPlugin: Started playing Slip
GabouPlugin: Tick Event at position 378 for song Slip
GabouPlugin: Started playing Glitch
GabouPlugin: Tick Event at position 0 for song Glitch
"

OnSongChangedEvent is called twice: once at the beginning, once at the end. I guess this is not normal, right ?

As I don't know much about C#, and I just wanted to have a working
muinescrobbler, I didn't investigate much into muine source to find
where the problem is coming from. 

Thanks. 

David