I went to school studying architecture.
I took a few broadcasting classes and got a job, 1st as an intern, doing ENG for TV news. Then I landed some contract work editing. After that I was reading the news on a local AM radio station.
5 years later, I have a morning radio show in a major market. I was there 7 years.
I moved to Nashville in Nov 2000 and had weekend shifts on two different radio stations + a satellite network.
While I was on the phone talking to a regular listener one Saturday, I flippantly said I needed a full-time, M-F day job. The listener had me come in for an interview at the company he owned. I was hired on the spot to manage the audio -video systems in a landmark facility in town, where he (the listener) had the contract. There's 22 rooms in the facility.
That was 10+ years ago.
Never finished the degree and never formally studied 'audio' other than what was in the broadcast classes.
D.A.R.K. is spot-on about networking. I got the TV internship by networking, and the first radio job, and the next one, and so on.. I also agree with what he said concerning the formal study.