Welcome to the forum Toshiro,
If I understand you correctly, you have a lot of 'albums' with only 1 track which you would like removed from your library (or you would rather not see in your Album Covers view).
There are several way of dealing with this - here are two:
1. Remove these tracks from you library:
Right Click on track(s) > Delete (Make sure that you have 'Delete from library only' selected.)
However it would seem a shame not to have access to these tracks via MusicBee and you may find that, as you use it more, you would like to have these tracks in your library (for example when creating your own playlists), so I would recommend:
2. Create Library Filters to separate full and part albums:
Have a look at the Wiki page on
Library Filters Create one filter (Full Albums) with the rule:
<Album Track Count> is greater than 2 Create one filter (Singles/EPs/Part Albums) with the rule:
<Album Track Count> is less than 3You can then display each filter on a different tab (with different views if preferred).