I didn't hear any sound in the video, Do you get this message in the console window?
[C:\programs\Krut]C:\programs\openjdk\jre\bin\java.exe -jar KRUT.jar
Starting, please wait.
Initializing ... Done.
Memory attempt 1: 2.35475176E8
Memory attempt 2: 2.35475176E8
filebuffer should use: 117737588
Memory after filebuffer: 138778680
arrays should use (in total): 78491720
Memory after arrays: 58888584
Exception in thread "Thread-5" java.lang.IllegalArgumentException: No line match
ing interface TargetDataLine supporting format PCM_SIGNED 22050.0 Hz, 8 bit, mon
o, 1 bytes/frame, , and buffers of 22050 to 22050 bytes is supported.
at javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:476)
at krut.KRUT_Recording.Sampler.init(Sampler.java:223)
at krut.KRUT_Recording.Sampler.run(Sampler.java:432)
Other than sound not working , It seems to work pretty good.