Hello everyone, I recently installed my music production software Digital Performer on my new Macbook Air via the remote CD feature on my old Macbook Pro. However, I am stuck now because in order to authorize the software I need to enter the authorization key while the install disc is in the drive. It doesn't recognize the CD in the other computer drive so it won't authorize, any ideas? Do I need to buy the external drive for this ONE application? Please help! Thanks!