You are seeing hostility where there is none.
I do not at all agree that the brain processes light and sound in a similar way. An enormous portion of our brain is devoted to vision, far more than to sound. Aural perception is fundamentally different because the information is in the 1D time domain, whereas vision is more in the 2D/3D space domain (motion is just one small part). The relationships between the two sensory modalities and the various types of memory are also very distinct (for example looking at the phonological short-term memory loop vs. the visuo-spatial short-term memory, etc.). And so on.
Regarding music perception specifically, a good site is this one for a music psychology course, with notes accessible from the menu:
http://www.ethnomusic.ucla.edu/cours.../172Frames.htm
Though web resources are no substitute for a good book. I've heard good things about
Cognitive Neuroscience of Music, but my "to read" queue is long enough as it is...