Paul Pliska has released PlayThis 3.0, the frontend that differs from others by running when you double-click a dmod.diz file. For a complete (and better ) description, along with changes/bug fixes in this version, view the comments.
As Paul describes it:
"PlayThis is another way to launch d-mods, instead of using a front-end or the command prompt. You just double-click the DMOD.DIZ file in the d-mod's folder. It's especially useful to d-mod authors, who are more likely to have the folder open for other reasons."
NEW in 3.0:
* Full support for WinDinkedit 9.0+
* Now allows editing of DMOD.DIZ files.
* Minor interface changes.
* Will no longer open a FILE_ID.DIZ, but instead,
passes it to notepad. (It's like a readme)