Add LSM callbacks so that the user can use custom media or media registered by other addons correctly.

Omen.lua

@@ -442,6 +442,8 @@ function Omen:OnInitialize()
 	db = self.db.profile
 	self:SetSinkStorage(db.Warnings.SinkOptions)
 
+	LSM.RegisterCallback(self, "LibSharedMedia_Registered", "UpdateUsedMedia")
+
 	self:CreateFrames()
 	self:SetupOptions()
 
@@ -563,6 +565,7 @@ function Omen:OnProfileChanged(event, database, newProfileKey)
 	self:ReAnchorBars()
 	self:ReAnchorLabels()
 	self:UpdateBarLabelSettings()
+	self:UpdateBarTextureSettings()
 	self:UpdateFuBarSettings()
 	-- These remainder settings were not placed in functions
 	-- and were just updated directly from the config code.
@@ -590,15 +593,26 @@ function Omen:OnProfileChanged(event, database, newProfileKey)
 	else
 		bars[0].Text2:SetText(L["Threat"])
 	end
-	local texturepath = LSM:Fetch("statusbar", db.Bar.Texture)
-	for i = 0, #bars do
-		bars[i].texture:SetTexture(texturepath)
-	end
 
 	self:UpdateVisible()
 	self:UpdateBars()
 end
 
+function Omen:UpdateUsedMedia(event, mediatype, key)
+	if mediatype == "statusbar" then
+		if key == db.Bar.Texture then self:UpdateBarTextureSettings() end
+	elseif mediatype == "font" then
+		if key == db.TitleBar.Font then self:UpdateTitleBar() end
+		if key == db.Bar.Font then self:UpdateBarLabelSettings() end
+	elseif mediatype == "background" then
+		if key == db.Background.Texture then self:UpdateBackdrop() end
+	elseif mediatype == "border" then
+		if key == db.Background.BorderTexture then self:UpdateBackdrop() end
+	--elseif mediatype == "sound" then
+		-- Do nothing
+	end
+end
+
 function Omen:SetAnchors(useDB)
 	local x, y, w, h
 
@@ -1077,6 +1091,13 @@ function Omen:ReAnchorLabels()
 	end
 end
 
+function Omen:UpdateBarTextureSettings()
+	local texturepath = LSM:Fetch("statusbar", db.Bar.Texture)
+	for i = 0, #bars do
+		bars[i].texture:SetTexture(texturepath)
+	end
+end
+
 
 -----------------------------------------------------------------------------
 -- Omen event functions
@@ -2459,10 +2480,7 @@ local options = {
 					values = AceGUIWidgetLSMlists.statusbar,
 					set = function(info, v)
 						db.Bar.Texture = v
-						local texturepath = LSM:Fetch("statusbar", v)
-						for i = 0, #bars do
-							bars[i].texture:SetTexture(texturepath)
-						end
+						Omen:UpdateBarTextureSettings()
 					end,
 				},
 				BarLabelsGroup = {