i had also bought augur rep tokens during the crowdsale. I have an email from augur stating:
"The encrypted private key for the new Ethereum account 53a8ecc4734e547a6c98b24cb1fe4b0f83f4d521 you generated at sale.augur.net is attached to this email. This key and the passphrase that protects it are VERY IMPORTANT. All purchased REP will be associated with this Ethereum account and protected by this key. Please take appropriate precautions to secure this key and its passphrase.
How do I access this ethereum wallet to trade my REP tokens? I am certain that I remember the passphrase I created at the time on the augur sales webspage - please help! Complete noob concerning this