...Some how once VisionQuest went out of business, I lost the license to view the videos even though I bought them...
I also purchased several of their videos. A few of the clips were DRM-protected - after a confirmed purchase, a license from a license server was acquired and stored locally.
After a hard drive crash, I was able to recover the clips, but not the licenses. By that time, the company had gone belly up, and the license server was gone. The DRM-protected clips now prompt for the user to acquire a license, but, since a license cannot possibly be acquired, the clips are now unplayable.
Lesson learned: avoid purchasing DRM-protected content.