When doing stress tests with 1200 random MIDI files from the Internet, 75 failed in 1.4.2beta. Furthermore, the exceptions have a "null" message. This behavior is different from 1.4.1.

Examples (attached to this bug):
- bewitd_a.mid: threw "could not get sequence from file" in 1.4.1, but "null" in 1.4.2

- bitedust.mid: throw IOException "Stream Read Error" in 1.4.1, but "null" in 1.4.2

- secret.mid: fails in all 1.4.x (along with 73 others)

- yourtime.mid: fails in 1.4.2 but not in 1.4.1

- bohem_al.mid: fails in 1.4.1 and 1.4.2, but loads OK in 1.4.0.

------------
Test program:

import java.io.*;
import javax.sound.midi.*;

public class MidiFileTester {
    
    // 0: test with MidiSystem.getSequence(File)
    // 1: test with MidiSystem.getSequence(InputStream)
    // 2: test with Sequencer.setSequence(InputStream)
    static int TEST_METHOD=0;
    
    public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.out.println("No parameter specified");
System.exit(1);
}
int total=0; int succ=0;
long startTime=System.currentTimeMillis();

switch (TEST_METHOD) {
case 0: System.out.println("Test using "
+"MidiSystem.getSequence(File)"); break;
case 1: System.out.println("Test using "
+"MidiSystem.getSequence(InputStream)"); break;
case 2: System.out.println("Test using "
+"Sequencer.setSequence(InputStream)"); break;
}
    
Sequencer s = null;
if (TEST_METHOD==2) {
s = MidiSystem.getSequencer();
s.open();
}

for (int i=0; i<args.length; i++) {
String filename = args[i];
File midiFile = new File(filename);
if (!midiFile.exists()) {
continue;
}
System.out.print(""+i+": "+filename+"...");
total++;
try {
//MidiFileFormat mff = MidiSystem.getMidiFileFormat(midiFile);
if (TEST_METHOD == 0) {
Sequence seq = MidiSystem.getSequence(midiFile);
}
if ((TEST_METHOD == 1) || (TEST_METHOD == 2)) {
BufferedInputStream bis =
new BufferedInputStream(new FileInputStream(midiFile));
if (TEST_METHOD == 1) {
Sequence seq = MidiSystem.getSequence(bis);
} else {
s.setSequence(bis);
}
}
succ++;
System.out.println("OK");
} catch (Exception e) {
System.out.println("FAILED:"+e.toString());
}
}
if (TEST_METHOD==2) {
s.close();
}
System.out.println(""+succ+"/"+total+" successful."
+" Failed:"+(total-succ));
long duration=System.currentTimeMillis()-startTime;
System.out.println("Duration: "+(duration / 1000)+"s "
+(duration % 1000)+"ms");
System.exit(0);
    }
}