The easiest way to do this is programming the playlists with AirList. With AirList you can set up rotation that are used as template for your playlists. If you like, you can create a rotation where every music track is followed by a jingle track.
You can upload the name of the previous, current and upcoming song to you web site with the FtpUpload add-in. You find this add-in in your Program Files/Raduga/AddIns folder. Please see the Readme.txt file for details.
Re I would like to put the next song on my website , juste after the current song , here : www.bestradio.fr.fm on a text file and i want that on this texte file there's juste the name of the next song , nothing else. Can you help me? Thanks!