I was a non-major and got in! And though I shadowed a few different audiologists, it was pretty informal so I didn't put any hours down on my application. IMO it seems that the programs I was looking at were actually interested in out-of-field applicants. I'd say taking Intro to Audiology is a really good idea and would show your interest and commitment to the field. I'm surprised that wasn't actually a prereq for the programs you applied to? I had to take Intro to Audiology, Anatomy & Physiology of the Ear, Language Development, and Phonetics before I could apply for a couple of my top programs. I would recommend anatomy of the ear over ASL, even though ASL is more fun. I've found that audiologists work more with people using other foreign spoken languages, like spanish & arabic than with ASL users, so it's not entirely useful. Good to know, but anatomy has been part of almost every class I've taken so far in my program, and it would show that you are really serious about audiology and the ear!!