Problems with populating and playing playlist (1 Viewer)

[Vattenmelon]

Hey, I'm trying to populate a playlist with files on a web server (http://someurl/some.mp3) and playing the playlist (from code). I add them to a PlayListType.PLAYLIST_MUSIC, but the problem is that I can't really make the playlist play all the tracks. It usually stops after playing two or three songs.

2009-01-03 18:17:13.583300 [Info.][MPMain]: OnPlayBackStarted
2009-01-03 18:17:13.584300 [Info.][MPMain]: Radio : http://someurl/ampache/play/index.php?song=3446&uid=2&sid=02e31d4e56c5f60ce1f88632a714d35c&name=/A-HA%20-%20The%20blue%20sky.mp3
2009-01-03 18:17:13.588300 [Info.][MPMain]: AmpachePlugin: Message is GUI_MSG_PLAYBACK_CROSSFADING
2009-01-03 18:17:13.689300 [Info.][MPMain]: TextureManager: Dispose:C:\ProgramData\Team MediaPortal\MediaPortal\Thumbs\Ampache\someurl_ampache_image.php_id=543_auth=b0a088b6f1a1effb2b5e6e4f5f3877f1.jpg Frames:1 Total:3 Mem left:1994391
2009-01-03 18:17:13.695300 [Info.][MPMain]: AmpachePlugin: Message is GUI_MSG_ITEM_FOCUS
2009-01-03 18:17:13.695300 [Info.][MPMain]: Playlistplayer: Stop file
2009-01-03 18:17:13.697300 [Info.][MPMain]: g_Player.OnStopped()
2009-01-03 18:17:13.699300 [Info.][MPMain]: ONPLAYBACK STOPPED: 0: http:/someurl/ampache/play/index.php?song=3446&uid=2&sid=02e31d4e56c5f60ce1f88632a714d35c&name=/A-HA%20-%20The%20blue%20sky.mp3
2009-01-03 18:17:13.700300 [Info.][MPMain]: automatic stop, played less than 5 secs
//if i try to play the file again here, it will stop again
[code]

I don't understand why playlistplayer suddenly stops playing. ( The "Playlistplayer: Stop file" line) Any ideas?