Duration of a midi file: I tried all I know!

Question

Please help me. I tried everything I know and could find on this forum but nothing is working. I always get a length of 9.222...E.. for my midi file length. I tried createPlayer and createRealizedPlayer without success. Here my source code...
//Time t = player.getDuration();
//player = Manager.createPlayer(url);
player = Manager.createRealizedPlayer(url);
URLDataSource source = new URLDataSource(url);
Time t = source.getDuration();
double totalSeconds = t.getSeconds();
String temp = String.valueOf(totalSeconds);
//int minutes = (int) totalSeconds % 60;
//int seconds = (int) totalSeconds - (minutes*60);
//String minuteString = String.valueOf(minutes);
//String secondString = String.valueOf(seconds);
//ltimeSong.setText(minuteString + ":" + secondString);
ltimeSong.setText(temp);
Thanks all of you.

Answer 1

Thank for your tip. But I have a question. In regards to your answer to my question and if I have inderstood what you meant, it is not possible to get only the duration of multiple files located in a directory and put them in separate labels without playing them? ...
N.B: I saw your site and I found your applications really good. Specially the Karaoke. I'm currently trying (trying is the appropriate word because I'm not comfortable with JMF) to build one (for a friend who own a bar) but if I only use Java, the performance is really worse (up to now)... And the same problem is present for other Karaoke I saw (see Javazoom.com for exemple). So, I used an outside .exe application and I would like to control the Process with a Swing application (already done in part). That is why I would like to get the Duration of my files to use them like a marker....
So if you can guide me (other tips, site, source code, etc..) or give me some books in reference to improve my skill :-) , it will be appreciate.
Sincerly, Yannick G. Montreal, Canada.