The Ohio State University' Center for Research in Music Cognition has a very helpful website.

Ohio State Music Cognition Resourses

There are several Academic Societies which support research at the intersection between Psychology and Music. Some are listed below:

Society for Music Perception and Cognition

International Conference on Music Perception and Cognition

Music Performance Research

Library of Congress - Podcasts on Psychology and Music

Music, Science, and Medicine at the New York Academy of Sciences