Thanks for your inquiry.
Sure, Aspose.Total for .NET provides a handy .MSI installer to automatically install the Aspose suite onto your machine. The DLLs only download does not contain any installer, instead it is an archive of the DLLs on there own.
I suggest to use the .MSI installer for an easy install, however if you are not running a Windows machine or wish to only use some of the DLLs on there own then you can use the DLLs only download.
If we can help with anything else, please feel free to ask.