The FMOD Studio Unity integration has been updated for 1.3 and the import process has been streamlined.
The full documentation can be accessed here: http://52.88.2.202/files/UnityDocumentation.pdf
The integration can be downloaded from the FMOD Download page: http://52.88.2.202/download
Users upgrading from 1.2 see this thread: viewtopic.php?f=30&t=18746