In Latin the term Audio is a amalgamation of two words, which basically translates to be able to hear a range of Sounds.
In Greek 'Phile' is from the term for being attracted to.
A Hybrid word used since 1950's until today to describe music that is Broadcast, it is also from a similar Period that High Fidelity was used, both are designed to be used to define a particular area of Marketing Demographic, and the influence is that some want to be labeled such a Type of individual in relation to how they make decisions about a purchase. I sense it gives a purpose to the reasons to spend monies on a means to be entertained using recorded music.