Google Analytics Download Tracking

I have 2 sections (A and B) with each section having 20 files of doc/zip/xls and pdfs. I would need this these files tracked in my existing GA account, which currently is already tracking the pages on the same site where the download files are available. The site is on Liferay 6.1 GE2, however the process is the same. I would need the files of each section tracked by section if possible. You would also need to show me how to add tracking in future as another language for the same section (A&B) is in the making. Thank You Gmail: [login to view URL]