Hi,
my goal is another.
Suppose to have a mp3 file on the usb pen drive. So, you load the mp3 file to play it.
My goal is to record a new mp3 file obtained from the original mp3, for instance removing the singer voice, audio dubbing my voice and recording my keyboard playing (ad strings or piano). And the recording should use the same pen drive (or the second one with sx900). My questions rises from the knowledge of two usb ports of sx900.
With my psr 950 is not possible to record a mp3 while playing and mp3, perharps because it has only a usb port and it would be complex to read and to write at the same time. I thought that this would be possible on new psr keyboards with more the one usb port. Sometimes my psr s950 cannot record a wav or a mp3 coming from a kar file playing, because of the conflict coming from the reading and writing at the same time.
alex