If norton is blocking the download, you can 'disable it' for it to download. But, i dont understand.
A serial number isnt downloaded. You would log into your adobe account and it will be there if you purchased
it online, if you got it from a cd, it is on the box.
How did you download it?
Adobe Audition 3.0 uses a 24-digit serial number. If you purchased the product on CD, the serial number can found on your registration card or on the back of you CD ROM case. If you downloaded the software electronically from the Web, the serial number is ***** the receipt page that confirms your purchase (a copy of the receipt page is e-mailed to you). For software downloads purchased through Adobe, you can also view the product's serial number in your Order History section of the Adobe Web site. Note: Do not use the number on the bottom of the Adobe Audition box.
When installing a new version of Adobe Audition 3.0, you will be required to enter the serial number. If you are installing an upgrade and the installer cannot find the previous version on your hard drive, you will need to enter both the new 24-digit serial number that was included with the upgrade and the serial number from your previous version.
If your serial number does not work, please contact Adobe Customer Support: www.adobe.com/support/main.html