On the android SDK, I understand calling an instance of the Publitio class (Publitio publitio = new Publitio(this) ) gives you the option of querying folders or files details when supplied with a Map of strings ( 'publitio.folders().foldersList(map, new PublitioCallback<JsonObject>() ... ' ), but my videos are segmented into a list of subject folders, and in each subject folder another set of folders based off topics. I would like to know how I can query through these folders in my media library. Please note that I know how to get a list of all the folders/all files as JSON objects. My question is more of how I can get access to video files in a specific folder amidst the others.