We've changed the format of the feeds slightly in order to more closely mirror the audioscrobbler format. The change affects the cover art in the album block.

The new format is:
<album>
    <name></name>
    <url></url>
    <coverart>
        <small></small>
        <medium></medium>
        <large></large>
    </coverart>       
</album>


Changed from:
<album>
    <name></name>
    <url></url>
    <coverart_small></coverart_small>
    <coverart_medium></coverart_medium>
    <coverart_large></coverart_large>      
</album>


Thanks to johnnaked for keeping us in line