Hi Nancy! Welcome to the forum.
We can get you sorted out. There's a few things you have to understand, though. I'll do my best to explain.
Media Center Installation:MC, like basically all Windows programs, installs itself into the Program Files directory on your C drive. This is where the program itself is installed (the stuff created by the nice programmers at JRiver, Inc) and that's probably the best place for it. You can force it to be installed elsewhere when you first install it, though this is always a terrible idea unless you really know what you're doing (and even then, it is probably still a bad idea).
Where MC's program files are installed has
absolutely no bearing on which users of the computer can use MC. Everyone can.
(Very) long story short: You don't need to uninstall and reinstall. It is probably in the
C:\Program Files (x86)\J River\Media Center 20 folder and that's where it should be.
Media Center Settings:Media Center, like most Windows programs, has some user settings that control how the program behaves and other options. In MC this includes things like what toolbar buttons you have set up, the vast majority of the options if you go to
Tools > Options and play around with settings in there. It includes things like your Audio setup as well if you go through the
Audio Setup Guide.
It specifically does NOT include, however, all of the files you've imported into MC (the music, videos, pictures, and whatnot), Playlists, and the other stuff you can access through the main interface for MC. Mostly it is the things under
Tools > Options.
MC's
Settings are user-specific, and are stored in the Windows Registry. These cannot be shared, but you can import from one user's account to the other if needed.
That's not usually a big deal because you would typically just set this stuff up once and leave it (unless you're a huge nerd like some of us here). It also lets multiple users have different preferences if they happen to prefer slightly different behavior (or skins or whatnot).
Media Center's Library:Here's where the rubber meets the road to your request.
Media Center is essentially a database. Much like iTunes, it tracks (imports), files on your computer in a variety of locations on disk and shows them all to you in one place and lets you sort and filter them and search them and whatnot. Unlike iTunes, however, Media Center lets you pick and choose (easily) where that database is stored. You can have multiple databases, and switch between them.
Media Center calls its database a
Library.
Unlike the settings discussed above, the Library contains all of the details about what files you've imported, where they are on disk, the Artist name, and any album art you've provided, or lyrics you entered in (all the metadata). The Library tracks how many times you've played the files, and what rating you've given them. All the stuff like that.
The Library also contains all of your
Playlists,
Smartlists, and whatnot. If you do advanced things like customize your own
Media Views, these customizations are also saved as part of the Library.
When you set up a new copy of MC, it creates the Library by default in your user's Application Data folder. On Windows 7, this is typically here:
C:\Users\glynor\AppData\Roaming\J River\Media Center 20\LibraryHowever, you can move it to wherever you'd like. If you want to move the Library to the Public folder, that might be a good idea for your setup. You can see where your Library is stored, and move it if you'd like, using the
Library Manager.
Note: You can't actually move it, because MC cannot run without having access to a valid Library (so it would be broken while it moved). However, you can Clone your existing Library over to a folder wherever you want on your hard drive (make a folder for it, because there are a bunch of weird database files in there), switch to the new clone, and then delete the old original one if you want.
Media Files on DiskLastly, there are the Media Files you have on disk that MC uses to actually, you know, entertain you. The MP3s and FLAC files, videos, and photos you've imported.
MC does not care, at all, where the media files are stored. It will use any file your user account has permission to read, and can access. This includes network disks, usb drives, your system drive... Whatever. If your user account has permissions to access the media files, and you import them into MC, it will use them where they are.
This stands in distinct contrast to iTunes, which always wants to consolidate your media files into your user's Music folder on the hard drive. MC does not do this. It imports the files where they are currently and does not move them unless you tell it to move them.
When you use MC itself to create new files (rip a CD for example), it stores in folders them based on the preferences in:
Tools > Options > File LocationYou can customize these settings (note, they're settings so they are user-specific) and change where MC will rip a new disc to on disk. So, you probably want to move at least your Audio Rip folder to your Users\Public\Music folder, if you want to rip there. This won't move the files you've already ripped, but any new ones will be saved in the given directory.
Note: The name "Library" can sometimes be misconstrued to mean the place where you have your media files stored on disk. In MC, these two concepts are not related. That's why I separated them in this post into "Library" (with a big L) and "media files on disk". It's maybe not the world's most perfect name for MC's database, because sometimes people get confused (though it is also descriptive of what it does), but it is what it is and it has been called that for a long time.
Those are the four main "places" where MC is "stored" (the different components). Read the articles I linked above, and you'll get a BUNCH more detail. In particular, the Library and Library Manager articles cover a lot of this and more:
http://wiki.jriver.com/index.php/Libraryhttp://wiki.jriver.com/index.php/Library_ManagerIn my next post, I'll tell you how to make all of the Users setups match.