local ID = 123456789
local MarketplaceService = game:GetService'MarketplaceService'
local Success, Response = pcall(MarketplaceService.GetProductInfo, MarketplaceService, ID)
if Success then
if Response.AssetTypeId == Enum.AssetType.Audio.Value then
print'ID exists'
else
print'Not an audio ID'
end
else
warn'ID doesn\'t exist'
end