I'm not sure I really understand why you would use Qlab in situations where you specifically want the behaviours of Powerpoint, Keynote or iTunes.
But……..
Attached is a simple workspace that allows you to do just that, (sort of).
You can add, delete and reorder cues in the list , but they must be simple Audio, Video, Titles, Camera or Microphone cues without any groups, auto follows or auto continues.
You can play them in order, or select any cue and play it , but you must use the SPACE BAR to GO. The GO is disabled while a fade is running.
Fade Times are set in the post wait of the TIME cue . SPACE BAR is deselected from Key Controls in settings and is used as a custom key trigger for a cue which does all the work. Video crossfades between cues, audio starts and fades the previous cue.
There are probably some ways to break it, but it seems to work quite well.
I have bunged in some royalty free stuff in the bundle to demo it.
The music is from
incompetech.com and is licensed under a creative commons attribution license
Licensed under Creative Commons: By Attribution 3.0
Mic