If you have legitimately purchased Adobe Audition 1.5 in the past the Adobe would have the record somewhere of the serial number being activated. You should be able to contact them and be able to work something out without having to repurchase a copy.
You can contact Adobe at the following address:
http://www.adobe.com/aboutadobe/contact.html
Re: Conversion to Vista?
If you have legitimately purchased Adobe Audition 1.5 in the past the Adobe would have the record somewhere of the serial number being activated. You should be able to contact them and be able to work something out without having to repurchase a copy.
You can contact Adobe at the following address:
http://www.adobe.com/aboutadobe/contact.html