Just log into your Magix Online Album or Website Maker, go into the "Online Media Manager" and locate the album that contains the medium you want to remove in the list of folders and albums on the left-hand side of the Online Media Manager window. The actual album contents will appear on the right-hand side of the window. Select the medium you want to delete by clicking on the corresponding thumbnail or select several items by clicking on the little check boxes in the upper, right-hand corner of each item. Now, click on the red cross icon above the field with the thumbnails in it to engage the delete function. That's it basically. (You will still be prompted whether you want to completely remove the item from your album or whether you just want to move it to the clipboard.)

I hope this helps.