Gforce1000 wrote:1) I cannot access the Bass/Treble controls from Export or ANY OTHER tab on the Menu
Are you talking about the Bass and Treble effect in Audacity? To use that, press the yellow Stop button then select some audio before accessing the Effect menu.
Note that Macs do not let you control the input volume of most USB Audio Devices. So you have to adjust the gain on the Presonus.