The Library has many audio resources to help you prepare your audition excerpts. It is recommended that you listen to as many recordings of the excerpts as possible to understand its performance context and ways it might be performed. The Naxos Music Library is a great source to find these multiple recording as it offers over 2 million tracks.
Also search the Library catalogue and limit results to CDs to discover many more recordings not available online. Listening equipment is available in the Library.