The best way to find scores in the library is to search the library catalog.
You can search for recordings the same you find scores: Use Advanced Search, and select Music Audio as the Material Type. We have recordings available online as streaming media, on CD, and on Vinyl.
The library has turntables and CD players available for listening here, if you don't have either available at home.
We also have many recordings available as streaming media. Classical Music Online is a great source (see the link below).