Wait for 10 confirmations and it will show up in your balance fee free!
You can also use the CLAM wallet if you want, but Just-dice offers that free, fast and simple service!
Minor correction: I think the transaction that moves your CLAM from their current location to the JD wallet includes a 0.0001 CLAM transaction fee, which you pay for, so it's not quite "fee free". Having said that, the fee is worth about a
tenth hundredth of a US cent, so it's almost free.
Edit: for example:
http://khashier.com/tx/5ead1d917e39a937df013a444764d6206dd58d22f1b74903a8c05c949affb2b1#o0