Where is my serial number (App Store d/l)

Question

I paid for and downloaded Aperture on my MacPro and am trying to install it on my laptop machine. I don't see a serial number on the email from the App Store confirming purchase and I can't seem to find it in the UI for Aperture. Suggestions?
Thanks.

Answer 1

This means I have a MobileMe account including Gallery, iDisk etc, etc, yes?
Correct, the new MobileMe account gives you all those things.
Do I also have an iPhone/iPad account under this name that I access from iTunes on my laptop under this account information /and/ I now have an Mac App Store App account under this same information that I access via the App Store App on my computers?
As long as you use the same Apple ID (typically your email address and a password), then everything should be available when signing in with that same Apple ID.
Note - if you changed your email address, then the Apple ID associated with your old email address may be different than the one with your new email address.
And both of these App accounts I can access directly via their respective Websites?
The new one can for sure. I am not sure how Apple will continue to handle an old account that is not current (e.g., the old '.me' vs. the new '.me' account). I would post in the MobileMe forum for any specific questions or issues you run into there. There will be users who have much more experience than I to help with any problems.
The advantage of using these Apps is if I get a new computer or have one stolen or the data trashed I can re-download with my login info?
Also, there will be no dmg or other data (like serial numbers etc) to backup or store because it will all be under one account name is that right?
Correct.
The idea being that we can use the Mac App Store service for purchasing, installing and re-installing software without having to keep a bunch of install discs, '.dmg' install files and any serial numbers around. The proviso to this is that if a software is discontinued, there is no guarantee that you will be able to re-install. For this reason, I keep a clone of my system disk on an external drive with the software installed that I know I want to use for the foreseeable future.
Or how does this work? For instance I have downloaded iPhone Apps to my iPhone from the old account and now I am downloading Computer Apps and will be downloading iPhone Apps from the new account...
This might be an issue where you need to login differently to download the older apps. I would try to login with both Apple ID's to test to see if the old account is allowed access.
I try to keep the same Apple ID for all my Apple related login details (although I lost my original Apple Discussion forum username 'CorkyO' due to changing from a Comcast email to a MobileMe one).
If you run into problems with logging in to the old account, you may want to contact Apple sales to see what your options are if this creates problems with any of your apps purchased under that Apple ID.