All download manager packages are WordPress custom post types, so you may use
get_post($ID) to retrieve regular post data. Other custom package data like download count, view count, package size are stored as post meta, so you may use
get_post_meta function to retrieve any package data. For example, to retrieve download count, you need to use
get_post_meta($ID, '__wpdm_download_count', true);. However, wpdm also has a function to retrieve specific package data, which is explained here:
More Function References:
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