Use this link to view or download the tutorial video for Wasp's WPL305e label printer, which includes instructions for loading the ribbon and media (labels).
https://dl.waspbarcode.com/kb/printer/wpl305/WPL_305_Movie.flv
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If you need a program capable of playing FLV videos, we suggest the free VideoLan Client (VLC) which is available from their website here: