Copyright and Sound Recordings
You can copy a sound recording if the purpose is for criticism and review, as long as the recording is properly acknowledged. You can also copy sound recordings (and films) for the purposes of teaching film and sound-recording production or for examination purposes.
If you wish to include music as background for your presentation, this is not covered by the educational exception. This would count as a performance, for which a specific licence is required. The University does not have a blanket licence for this use.
Note that downloading music files from the internet without permission of the rightsholder is illegal.