format conversion not supported

[Stashare]

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: format conversion not supported

[andrei-punko]

It's because target audio format has not the same rate as source format.
As quick solution to test it - change sample rate of target audio format to the same that used in your tracks.
I meant this parameter:
float sampleRate = 44100;