Yes, this is possible as of Centova Cast v2.2.0.  Note that if you upgraded to Centova Cast v2.2.0 from an earlier version, you'll need to update your media library, then click the "Perform full library update" button to pull in any cover images from your existing library.

Centova Cast looks for cover images in the following places (in order of preference):

  1. In a JPEG file with the same name as the MP3 file.

    Example:
    MP3 filename: My Music\demo_track.mp3
    Cover filename: My Music\demo_track.jpg

  2. In a JPEG file named "albumartsmall.jpg" in the same folder as the MP3 file.  (This is a standard filename also used by Windows explorer.)

    Example:
    MP3 filename: My Music\demo_track.mp3
    Cover filename: My Music\albumartsmall.jpg

  3. In a JPEG file named "folder.jpg" in the same folder as the MP3 file.  (Much like albumartsmall.jpg, this is a standard filename also used by Windows explorer.)

    Example:
    MP3 filename: My Music\demo_track.mp3
    Cover filename: My Music\folder.jpg

  4. In any JPEG file in the same folder as the MP3 file.  If more than one JPEG exists, preference will be given to those with filenames containing the words "front" or "cover".  If no filenames contain "front" or "cover", the first image Centova Cast finds will be used.

    Example:
    MP3 filename: My Music\demo_track.mp3
    Cover filename: My Music\any_filename_will_work.jpg

  5. In the ID3 tags contained within the MP3.  Many MP3s come with cover art embedded within the MP3 file itself, so you don't need to upload any additional images to make this work.

If Centova Cast detects any of the above images during a media library update, it will automatically import them and use them as the cover images for the albums associated with the track.

Also note that when Amazon® integration is enabled, cover images retrieved from Amazon.com will always override any locally-defined cover images.  If this is undesirable, you should disable Amazon integration.