From what you say, it seems you have installed the VSTi (Superior Drummer 3) but NOT the Superior Drummer 3 Library, which consists of 5 parts (that is, if you want to install all of the features – it depends on how many features you want – I think you can do without some of them, like nº 3: “surround setup”). Remember that if you wish to install the complete library you need a WHOLE LOTTA SPACE on your Hard Drive.

Anyway, you need to install your Toontrack Product Manager and input your Toontrack customer login data into it. It will show you which libraries you own. After entering your customer username and password, the next step for me would be to go to the “Tools” menu on the upper bar and choose “Options”. There you can set up a path for your download files (make sure you use a drive with lots of space). Those are just for the downloaded installer files. For instance, if you download Part 1, after that you’d have to install it, and during the setup process, you will be asked WHERE you would like to install it (I use a folder named “Superior Drummer 3 Libraries” in a hard drive with tons of space. You may have to download and install some update files if there have been some changes to the drum library). After having installed one part, you can delete the installation file(s). Do so from the main screen of Toontrack Product Manager: on the left column a new option to get rid of installer files will show. Do it, it will save up some space to download the next part.)

The whole Standard Superior Drummer 3 library (all 5 parts) amounts to 221 GB of Hard Drive Space. Remember you can save some space if you decide to install just the parts you’re planning to use. There are articles about which are the necessary parts and which ones are optional – just in case you’re short of hard drive space. When you have installed the required parts, start SD3 either from the Standalone App or as a Virtual Instrument in your DAW, and you’ll be able to choose either your SD3 Library or the EZ Drummer libraries you own.

There are 7 complete drum kits in the SD3 Library, and about 20 or so more snare drums to choose from.

I hope this helps.