the installer unpacks the 4 parts as follows
02_SONAR_X2_Producer.part1:
Setup-1.bin,
Setup-2.bin,
Setup-3.bin,
Setup-4.bin,
02_SONAR_X2_Producer.part2 Setup-5.bin,
Setup-6.bin,
Setup-7.bin,
02_SONAR_X2_Producer.part3:
Setup-8.bin
Content\Perfect Space
Content\RXP
02_SONAR_X2_Producer.part4
Setup.exe,
Setup-9.bin,
Setup-10.bin,
you then just double click the Setup.exe and that's it apart form answering name and serial number questions and wher you want plugins to go etc