The jDownloads Content Plugin can display Downloads in other Joomla! content such as articles. Here you can see different results from the jDownloads content plugin. This simple example just uses the basic placeholder to display a single Download where the ID is the id of the Download. Alternatively to make it easier you can use the jDownloads Editor Button Plugin to select the Download by name.  When you enable (publish) the jDownloads Editor Button Plugin> a button labelled 'Download' will appear at the bottom of the edit page. Clicking on that will allow you to search for the required Download.

{jd _file file==ID}