Create your playlist , store your presentation and set in the List some mark locator for the different scene , act and presets.
Inserting some new audio or video item is so simple as just Drag & Drop them from windows environnment. The audio format is totally free (Mpeg 1 layer 2, layer 3, linear files, any bitrate, any sampling frequency can be used. For video just install the different codec for MP2, DIVX,… on the pc and you will be use the different video formats.