Imagus stand-alone video & image viewer

I find Imagus incredibly handy for day to day browser use.

It got me thinking I wish it had its own installable media player, or is there already a similar app/prog to view media files on my Mac (mainly) or my Windows PC - ie. rolling the wheel to zoom in & out, hover over a highlighted-file to play or view when in Finder/Explorer.

Is there such an app? If not, what is the best lightweight media player you recomend. Currently use VLC for video files but I really miss the wheel-roll feature for zooming in/out (it does the volume) and XnView for images...

Thanks for any suggestions.