Dose anyone know if there is a way to add other parts libraries to Circuit Studio? I know that Mouser has a very good one, I'm just not sure how and where to load it. Can anyone shed some light on this? Thank you. 
If it is any help there are lots of downloadable libraries available from Altium at http://designcontent.live.altium.com/ . Also it is possible to make some use of third party libraries if they can be downloaded in Altium format (.PcbLib, .SchLib or .IntLib).
If you go to the web link and sign in (a free account may be required) you will then be able to search and download IntLib libraries that you can then add in to CircuitStudio to make use of. You can specify a library search path under File > System Preferences.