This webpage (credit for which goes almost entirely to Dr. Richard Berg) contains links to web sites with reference material related to PHYS102: PHYSICS OF MUSIC, an introductory course for non-science students offerecd at the University of Maryland. No attempt has been made to evaluate these sites or to rate their complexity, so the material therein may not be entirely suitable for this class level. However, inclusion here does imply that the material is correct and useful for those seeking information at the level provided.
Check for other links in Comments after Lectures which is a separate webpage for most of my "extra" notes.
Animations for Acoustics Education, by Victor Sparrow of the Pennsylvania State University Graduate Program in Acoustics. Very nice set of animations done in Mathematica.
Websites for Teaching Acoustics, compiled by Tom Rossing, January 2001 (http://www.public.coe.edu/~jcotting/tcmu/Acousweb.npt.htm)
Go to Alan Peel's Home Page (which will probably not be a directly useful resource for Physics 102!)