You have to re-apply once a year for the Adobe End-User Redistribution License. From the e-mail I got from Adobe after renewing mine this year:
"Attached is an Adobe Portable Document Format (PDF) file of the distribution license agreement. Please keep this file for your records. The agreement is valid for one year, after that one year you can renew the distribution license agreement by following the same process."
Lawrence Garvin wrote:
You should only have to apply for the End-User Redistribution License *once*; after that, Adobe should be emailing you a notification with the link to the download URL covered by that license each time a subsequent Flash Player release is published.