Haha weather? I suggest you check the meaning of "whether", not "weather/ wheather", and read Pappenheimer's post again.
I suggest you don't use the media_... but snd_... instructions, the latter have a few advantages. Additionally, if the sound is for the player, use snd_..., otherwise, for enemies and the like, use ent_playsound to achieve a 3dimensional sound effect (you can try to deactivate the doppler_effect, too, I don't like it).