Multiview is great! I love it - a simple one-stop program that can view any file you throw at it*. It is ideal for setting as a "default viewer" in YAM etc because it will, literally, load anything (pictures, anims, sound samples, video, text, hypertext, even structured drawings and tracker mods).
Alas, it won't work with 1.3 as it requires Datatypes which only became available in 3.0. Time to upgrade?
Chris
* providing you have a Datatype for the format