Wow. If LTC were $10 per you would be making an astonishing $0.072 per hour.
I didn't think it was possible to be any less efficient than CPU mining, but you found it. Congrats!
You're laboring under the assumption that I'm doing nothing but listening to the radio over the phone for hours. I've got it playing over Skype while I go about my day job. Will it make anyone rich? No, but for folks who are just getting started, who don't have the money or the know-how yet to mine - even CPU mining - it's a start.
A pretty terrible start if you ask me, your time would be better spent figuring out how to gather something other than dust.
Same as a faucet, waste of time unless you are 12.