Audio level setting for recording purpose

This is a test on the setting i've set on BB Flash. I put it roughly around a third from the highest recording sound. The sound looks okay without any significant noise when i play on my computer using BB Flash Player, however i need to ensure that the volume control is set quite high. But once i uploaded it to Youtube, the sound recorded when played back was lowered down, so listener could not hear my voice clearly. I guess i should adjust BB Flash recorder recording sound level to half level.

Below is the output when the setting is at a third from the highest level.