Vibration Problem

Once again I am seeking advice from someone with the experience. I have vibration problems with my cd player. There seem to be many tweaks available out there I could use but which is the most effective yet not cost too much?
How about the solid brass adjustable isolation cones? Or the Final Labs Daruma 3ii's which are two discs with a ball
bearing in between them? Also, what exactly are the "Harmonix" Tunig Feet? Has anyone tried any of these?
Maybe you'd recommend something else. I thank you in advance for your advice.