Fixed bugg where saving an unseparated waveform produces _A and _B files.
Fixed bugg where saving an unseparated waveform produces _A and _B files.

Signed-off-by: Filip Szczepankiewicz <3b458b1fa73dac1df9ec28d49d9100836d6d1cef@gmail.com>

jsjol/NOW,filip-szczepankiewicz/NOW