Ok.
Let's just go back here. .
1- Are you trying to transfer all 4 tracks from the Port Studio at in one go ?
2- If so, you'll need to go from the direct outs of the port studio like this;
Port St MBox
1 > Line in 1 (on front panel select line, no pad ) trim input as desired
2 > Line in 2 (on front panel select line, no pad ) trim input as desired
3 > Aux in 3 (on front panel deselect phono so it's aux trim as desired)
4 > Aux in 4 (on front panel deselect phono so it's aux trim as desired)
The Aux in trim will be trimming you Port Studio's outs 3+4
All of these need to be on TRS jacks.
Open your I/O set up & make sure all your inputs are routed correctly. ( see manual ).
All should be good.
