Can't believe I've been using Toast all this time and have not noticed this. With a burn going in Toast (I saw this in the 5 Lite version), you get a progress bar as part of the dock icon. It doesn't give you time left (hint to Roxio), but it does give the OS X progress bar. At least instead of unhiding the app all the time, you can get an idea as to how much longer you have wait by looking in the dock.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040114183744261