3DXchange is a separate companion program and not part of iClone Studio. You can find out more about 3DXchange by going to the link below.http://www.reallusion.com/iclone/3dx.asp
Magix movie and audio software is not part of iClone Studio either. These are not from Reallusion so you will need to go to Magix website to find out more about them. They can be found below.
http://www.magix.com