Hi Craig.
The length of each sound is only 0.004 of a second, so if your hearing it playing back as a continue sound, then the loop is working.
similar to the sound you used to hear on the TV when it was late at night and there were no more transmissions
Yes, that’s a sine wave test signal and exactly what you should hear your Tyros producing here.
The file you loaded is the one I was hoping would be clean and noise free. So just to be sure, could you please load up the other two and see if you hear a slight buzzing noise to the test signal. It’s important that you do hear the noise at this point if you believe the first file was clean.
Kind Regards.
James.