You could try Changelly (changelly.com), they allow the purchase of most Altcoins with a MasterCard/Visa. If you didn't want to do that you could probably buy Bitcoin on Coinbase (they don't charge a transaction fee) and then send the BTC immediately to an exchange (I'd recommend BTC-e.com) and convert it to LTC. Last, you could probably use the currency conversion section of this forum and pay with something like Paypal or Skrill.
I hope these helped.
Perfect answer Nathan!
I was going to ask where I would be able so to get some alt coin in this way too.
Great timing to discover this thread because I was going to the currency exchange thread and would of probably ended up losing my btc there just like I had a week ago today from an exchange I did middle of last week and still have not received my refund or my btc that i sent to them in where they demanded me to send first.
![Roll Eyes](https://bitcointalk.org/Smileys/default/rolleyes.gif)
So best to use these sites which have both the sending and receiving parties covered.