My TinyMCE MCFileManager/MCImageManager trick: When media is file, not image (or vice versa)

At work (I switched fulltime jobs a little while ago, remember?) we use MCFileManager and MCImageManager as the file- and imagemanager for TinyMCE. The former – quite obviously – handles files and the latter images … but what about media (flash, quicktime, etc.)? At work MCImageManager popped up for managing media, yet we wanted MCFileManager …