Pictures in playlist

[wayzor]

I know Videostream already can show pictures, but I want to show a mixture on videos and pictures for commercials in my store (I use a playlist on repeat for videos right now).
Would be very nice if you let me add pictures to the playlist and have an option to control how long pictures were displayed, before the next element in the playlist were played.

Example have an option in the menu for "show pictures in playlist for:" and then let me chose from some presets. Options from 5 seconds to 1 minute would be good.