Adding on to what Hs666 already explained, these instances that keep happening to you show you are developing a form of synaesthesia. Meditating on it will improve this ability you are manifesting. A great starting point is the
Sound Meditation on the main JoS website.
This is also a variation of astral hearing, which is not as limited as to involve simply hearing entities speak but encompasses all spiritual hearing skills like what you mentioned. It is amplified with this
meditation among others.
You can also work with the
colour meditation, which will teach you to feel different colours and, in your case, even hear them. This ability will greatly help you with witchcraft and energy work.
All that is suggested above will help you train this ability in a very rounded way, and you can optionally try and apply this ability to many things, such as detecting dangers which is described in an overly simplistic fashion in one of the declassified CIA documents. I will report which one once I find it. The method illustrated there is quite inferior to JoS meditation but nonetheless effective.
In conclusion, there is nothing you should concerned of, in my opinion. It's something you can train and that can help you perceive the world in a fuller way, closer to the Gods. I would regard it as a privilege rather than a concern. Best of luck on your advancement!