LED dimmable lights in audio room?

OK.

Thanks. 
Sounds like it won't be an issue, and if it is, I'll figure something out, or just put them on a regular lightswitch.

It might be an issue, but, it is pretty hard to predict where that might be the case.  I think your try and see, with an expectation that you might have to change something, is the right approach.

@ghdprentice, I do all my serious listening with the lights out. Visual distractions interfere with the image. However, It is hard to change records with the lights out. With LEDs you can put the light where you need it and avoid lighting up the whole room. The switch for the lights in my cabinet is right next to the turntable. The power supply for the lights is mounted behind the cabinet and does not cause any problems.

@mijostyn.  I like that. I have a little LED spotlight next to my turntable for when I am listening to vinyl… with a switch accessible before I get to it. 

Sometimes I listen in total darkness, have black out shades on windows. Other times I use various LED light shows (consumer editions of professional light show equipment) in concert with blacked out room, I also have turntable led light, none have created any noise through system. Place your transformers in proper place, shouldn't have any problem.