I'm fortunate in having access to both the public library and the university library systems.
The public library is primarily a source of recreational reading material. I have a branch within walking distance, so I am usually there weekly. I read (or skim) magazines on site and check out books for use at home. They do offer CDs, but my collection is larger.
The university system serves primarily as a reference resource. As a retiree I have computer access to their subscription services over the net. I can also arrange for materials via interlibrary loan if the primary collection lacks something I want. They also offer research services that are convenient if I'm preparing something for publication.