living by the sea

In 1980, I bought a 1977 car from someone who lived right next to the beach. The car was probably 100 feet from the water. 3 years later, the entire car rusted apart, even the firewall!!! Of course, it was a 1977 Dodge Aspen which was made during Chryslers dark days so that may have had something to do with it.

I would proceed with caution.

It will depend on your use of air conditioning. If you allow the temp to go high to save electricity, your indoor humidity will also rise. Part of air conditioning's function is removing moisture from the air. I grew up near the ocean with a frugal dad who didn't mind indoor temps of 76-78. Everything metal developed a patina of oxidation and everything made of wood (doors, cabinets) all swelled. Keep your temp below 74 and you should do fine--as I learned in my adult years when I was in charge of the thermostat (and paying the bills)! I'd still unplug and clean/treat all my connections once per year (which I do regardless of where I live).

Not to mention seismic vibration from the action of waves landing on the shore.

Misternice,
Take your stereo system with you! Use it and enjoy at as much as you can. You might even want to share your love for music with some new friends at your new home. Don't worry about damaging it, which I doubt you will, and enjoy it to the fullest!

Sea air is corrosive. Just do what you can to provide a good climate indoors and things will work out as best as possible. Maybe start with gear that is not too costly to replace if needed and see how it goes. Live and learn.