Within FlashBuilder it is possible to open a media file (such as an image) by right clicking on the file then selecting Open With and then choosing from a list of applications to open the file with the most appropriate editor. The trouble with this approach is that it is time consuming and has to be repeated whenever a similar file type needs to be edited from within FlashBuilder. How can I associate a file (e.g. audio.png) with an editor (e.g. Photoshop) to permanently connect the file type with the application thus ending the process of selecting the application every time a similar file type has to be edited.
Go to settings under Window->Preferences->General->Editors->File Associations.
Add a new file type (Add button near top of dialog).
Add a new "Associated Editor" in the bottom portion of that dialog. (Second Add button towards bottom.)
Select "External Programs" after clicking "Add" to pick whatever program.