Shopping

They sell modular wall plates in 1 to 6 port flavors.

Pick up as many as you need from the local home improvement store. Grab some F type modules, and some low voltage brackets while you're there.

Installation

• Cut a hole in the wall large enough for the low voltage bracket to fit.
• Install the low voltage bracket.
• Shorten the lengths of cable, and add new connectors to the ends (you'll also have to buy these from the home improvement store, so go back and get them).
• Connect the cables to the modular jacks.
• Install the modular jacks in the modular wall plate.
• Install the modular wall plate in the low voltage bracket.

Holey VS. Pointy

The pointy connectors are "male" connectors, whereas the holey connectors are "female". When a male connector loves a female connector very much... You get the picture (I hope).

Why so many?

There is no way to say for sure why there are so many cables here. It's possible that some come from somewhere, while others go somewhere else. You'll have to trace the cables to determine where they come from, or where they go to.

For this a cable tracer such as the Gardner Bender Wire-Tracker, can come in handy.

Your TV, sadly, has what is referred to as a susceptibility problem -- it's vulnerable to being confused by electromagnetic trash generated by other gizmos, like air pumps and desktop PCs. From the nature of the interfering devices, it sounds like the electromagnetic trash is being carried from your PC and air pump to your TV via the power lines.

My recommendation is to plug your TV into a high-end surge suppressor with built-in EMI filtering circuitry (such as a Tripp Lite Isobar or Isotel) -- this will reduce the amount of trash that gets into your TV, and hopefully make it so you can watch TV with the computer on.