Hi,
there is nothing in the profile to limit the number of items listed in a playlist on the device unless the files are in a format that the device does not recognize. If Mezzmo is listing the files with a mimetype or DLNA id that the device does not support it will not list the files. Please check the format of the files that are not listed against the format of the files that are listed to see if it is just a particular format that is not listed (for example mp4 is listed but avi is not).