The original Player offers more options than the plugin supports.
The Website of the plugin-author is unavailable.
I need to add the version of the player as an option for EACH file which I want to implement, because I have single-file-embeddings and multi-file-embeddings.
If I define "Multi" in the options-page, even single-mp3-embeddings get the navigation arrows ...
http://wordpress.org/extend/plugins/dewplayer-flash-mp3-player/