How To Remove Radio Messages
You know how in GM ppl keep spamming their radio messages: "B Site" "B Site" "A Site" "Bomb Spotted" "Bomb Has Been Planted"...gets in your way of hearing the ghosts....so this is how you remove them 
Step 1: Go to your Crossfire Folder/rez/Snd2
Step 2: Make a new folder on your desktop. make sure they are different names then what are in the current Snd2 folder. i.e.
Step 3: Move all the sounds into the corresponding folders
Once in game you shouldnt be able to hear "Fire in the hole!" and "Mission Success" and all other annoying messages...This could work for all other sounds too, feel free to expirement...If this doesnt work let me know ill help you out!