Here's a breakdown of the meaning:
* "Take care": This is a common farewell, usually implying "be well" or "look after yourself."
* "sense and sounds will take themselves": This is a metaphorical way of saying that the details of the situation (the "sense" or meaning) and the external environment (the "sounds") will naturally fall into place. It implies that the speaker trusts the situation to work itself out.
This phrase is often used in a lighthearted way, perhaps when someone is anxious about something, or when the speaker wants to emphasize that they don't want to dwell on the specifics. It's similar to phrases like:
* "Don't sweat the small stuff."
* "Everything will be alright."
* "Let it go."
The phrase also suggests a certain amount of faith in the natural order of things, and a belief that everything has a way of working out in the end.