Please see this thread which will give you some idea about modeSMixer2:
Feeding data from Piaware into Basestation
You can download the installation software on your Desktop/Laptop from here:
drive.google.com/file/d/0B7NYXi … Qwdkk/view
Use Windows software like WinSCP or FileZilla to copy file from your PC to RPi
#once on RPi, unzip the .tgz file:
sudo tar -xvf modesmixer2_rpi2-3_20170506.tgz