Take a deep breath.
MC isn't the world's easiest to use software. It *is* the most powerful media player and library in the world. IMHO.
I like to say that MC is like a race car. You can't just sit down and drive it. You need to know a few things. You need to understand the controls. If not, you either won't get good performance, or you might not be able to get out of first gear. But once you know what you're doing.... you can do things in this "car" that you can't do in any other.
A SmartList is a Playlist that has criteria that let's it build itself automatically. Like you could have a list of just music made between 1972 and 1981. The SmartList would look at the date and only show you files between those two dates. Cool right? You can use a LOT of different criteria for an MC SmartList, including a way to locate missing files.
I thought that if Fix Broken Links was set to "ON" then it would remove any files that are no longer on disk. I'm not sure. <shrug> But I can help you find all of your missing files in about 60 seconds. Here's the step by step:
1. Go to the Left Navigation Pane and find Playlists. Right click and select "Add Smartlist"
2. In the dialog that comes up, name it something descriptive like, "Missing Files".
3. Click the button at the lower left labeled Import/Export. Paste this into the Import/Export box:
[Media Type]=[Audio] [=ismissing()]=1
4. Click Ok until the dialogs are all closed.
You should now see a list of all missing files in your system. Check a few and make sure they are the files you are expecting.... the ones that are no longer on your system. Let's delete them: Click one of them. Select all with Edit > Select All. Press the delete key. You can choose the default in the box that comes up. Missing files should all be gone now.
Good luck to you.
Brian.