Media Center organizes its views based upon the metadata (tags) contained in the audio files. The stock views perform this well. Unfortunately, the metadata that comes from various sources is often inconsistent, and thus it appears in multiple locations in a view.
So, you'll want to examine and correct the tags.
Show you tracks in a Panes view. Select the affected album, and in the Tag Action Window, look at the fields Album, Artist, and Album Artist. If the corresponding field in the Tag Action Window indicates <varies>, then enter the correct single consistent value there. You want to see a single entry for each of those tags - these drive how Media Center groups the tracks from an audio album.
Start with this, and we can examine more as necessary.
