I tried adding the packages from the package manager, and got loads of errors. For example, I got two files called Album.cs, with conflicting definitions of the Album class. If I deleted one, I then got loads of errors like...
The type or namespace name 'Models' does not exist in the namespace 'MvcMusicStore' (are you missing an assembly reference?)
The type or namespace name 'Artist' could not be found (are you missing a using directive or an assembly reference?)
How am I supposed to learn this stuff if the downloaded samples don't even work?