sound.PlayFile, stopping sound

[JakusPL]

Is there any way to stop sound created by sound.PlayFile?

include("shared.lua")

function ENT:Draw()
	if(self:GetNWBool("IsPlaying")) then
		cam.Start3D()
			render.SetMaterial(self.SpriteMat)
			render.DrawQuadEasy(self:GetPos(), (GetViewEntity():EyePos() - self:GetPos()):GetNormal(), 128, 128, Color(0,255,255,122))
		cam.End3D()
	end
	
	self:DrawModel()
	
	local plyang = (GetViewEntity():GetPos() - self:GetPos()):Angle()
	local ang = self:GetAngles()
	//local ang = self:GetAngles()
	plyang:RotateAroundAxis(plyang:Up(), 90)
	plyang:RotateAroundAxis(plyang:Forward(), 90)
	
	//local rr,rg,rb = math.random(1,255),math.random(1,255),math.random(1,255)
	
	//local color = Color(rr,rg,rb)
	cam.Start3D2D(self:GetPos() + self:GetUp() * 60, plyang, 1)
		if(!self:GetNWBool("IsPlaying"))then
			draw.DrawText("Hardbass\nRadio", "Trebuchet18", 0, 0, Color(255,255,0,255), TEXT_ALIGN_CENTER)
		else
			draw.DrawText("Now playing:", "Trebuchet18", 0, 0, Color(255,255,0,255), TEXT_ALIGN_CENTER)
			draw.DrawText("\nDJ Bar@bass", "Trebuchet18", 0, 0, Color(255,255,255,255), TEXT_ALIGN_CENTER)
		end
	cam.End3D2D()
end

function ENT:Think()
	if(self:GetNWBool("IsPlaying")) && !self.IsAudioStarted then
		sound.PlayFile("sound/djbarabass-cityzen.wav", "stereo", function(station)
			if(IsValid(station)) then 
				station:Play()
				audio = self.station
			end
		end)
		self.IsAudioStarted = true
		
	elseif(!self:GetNWBool("IsPlaying")) then
		if(IsValid(station)) then
			station:Stop()
		end
		self.IsAudioStarted = false
	end
end

[smithy285]

Not sure if I quite understand your question, are you not stopping the sound here;

	elseif(!self:GetNWBool("IsPlaying")) then
		if(IsValid(station)) then
			station:Stop()
		end
		self.IsAudioStarted = false
	end

[Remixful]

Uh. Your code is a little confusing.

audio = self.station

Why'd you set audio if you're not going to use it again (and why are you using the self keyword)? In your code, station only exists as the callback's argument, so it's nil anywhere else.