What's the "correct" way to install LED drivers for accent lighting?
I took a standard ATX power supply from a computer and took the 12V output to drive lights. I put it in a closet and ran romex through the way -- seems a bit strange to use such heavy wire, but it's (relatively) cheap, conforms to code for being in walls (most places), and reduces voltage drop.  I put the power supply (in a small computer box) on a switched outlet so the 110V is switched, which reduces zombie current draw when the accent lights are not in use.  IN my case I just fed a 110v run from the lights in a related area so the accent and regular lights go on and off together.  (The manufacturer's remote can also turn off, leaving the power supply on). 

I do not suggest this is code compliant, merely one approach that functions.  Also, I feel a lot safer with a quality PC power supply than some of the cheap bricks, and much safer with romex in the out-of-sight runs than most cheap-LED-associated wiring.

Be sure to check the power supply to see its 12V structure, some carry full capacity on one bus, some have more than one to split the load, and you need to (for those) take care which outputs you use.