There are a few things to note here.
1. Here is the link to the download/install instructions for X3:
http://cakewalk.com/support/kb/pages/x3_download_installation_instructions.aspx 2. When the above page loads, there is a link that will expand the page to include an explanation of what the downloaded files contain. Click on the link for the version of X3 you have, and it will add that expanded text to the page for you to read. This will help you understand what runs what in the installation process.
3. During normal installation, once the Read This First installer finishes, it will have put some read me doc out there for you, and some other files. I believe the installation documentation says that the install will automatically start after you run the Read This First, but I do not believe it actually does kick off the Part 1. I seem to recall kicking off the Part 1 installer manually, and it automatically does its thing and then auto-runs the Part 2 and the Part 3 installers.
4. The Loops And One Shots first installer will install part of that set of things, then it will auto-launch the other Loops And One Shots installers (2 and 3).
5. Dim Pro is its own installer. Please note that if you had Sonar 8.5.3 or later installed already, then you are most likely already running Dim Pro 1.5, which has not changed, so if Dim Pro 1.5 is already installed, then there is no need to run this installer, as nothing has changed. NOTE that if you DO run the Dim Pro installer, then when it runs for the first time after installation, it will require registration to complete, and the registration process REQUIRES that Dim Pro be running either as a plugin in Sonar where Sonar was launched EXPLICITLY with the Run As Administrator option, or you can run Dim Pro in stand-alone fashion, but here also you MUST launch it with the Run As Administrator option set (right-click the icon for Dim Pro and either just click on Run As Administrator, or if you want to permanently set it to Run As Administrator you can right-click on the icon to open the properties window, then click on the Advanced tab, then check the box for Run As Administrator, then click Apply and all that then you can back out of properties and run Dim Pro to complete the registration process.
6. IF you already had Dim Pro 1.5 installed, you also do not need to run the installer for the Dim Pro expansion packs. If you did not have Dim Pro previously installed, and installed it as part of your X3 installation process, then you should run the Dim Pro expansion packs installer. I always run all of these installers with the Run As Administrator option set.
7. I believe the Melodyne installation kicked off during the X3 install, and required the creation of an online account with them - just follow the prompts for all of that.
8. I have not yet installed the Addictive Drums. It has its own installation process - I cannot guide you on this, until I do it for myself.
There are additional freebies available for you to download and install. Here is the link for a free audio effect Audio FX 1:
http://www.store.cakewalk.com/b2cus/ProductInfo.aspx?productid=35-CWF11.02-10E Here is the link to download the free Audio FX 2:
http://www.store.cakewalk.com/b2cus/ProductInfo.aspx?productid=35-CWF21.01-10E Here is the link to download the free Audio FX 3:
http://www.store.cakewalk.com/b2cus/ProductInfo.aspx?productid=35-CWF31.01-10E Here is a link to a page that explains the free VKFX VST and Pro Channel effect you get through November 30, for picking up X3 Producer - this page also explains how to get the promo code and redeem it to download it:
http://www.store.cakewalk.com/b2cus/ProductInfo.aspx?productid=30-ODVD1.00-20E Here is the link to download the free Square 1 synth:
http://www.store.cakewalk.com/b2cus/ProductInfo.aspx?productid=35-CWSQ1.40-20E Here is the link to download the free SFZ+ Professional Sound Font Player:
http://www.store.cakewalk.com/b2ceuro/ProductInfo.aspx?productid=35-CWSZ1.40-20E I think that's all the freebies, and pretty much all I know about the installs.
I hope some of the above is helpful,
Bob Bone