GUARDA ANCHE LE SEZIONI EDITOR VIDEO E SLIDESHOW
http://audio-joiner.com/it/
http://cut-mp3.com/it/
http://soundation.com/studio
http://makeownringtone.com/
http://online-audio-converter.com/it/help/how_to_extract_sound_from_video
http://www.cellsea.com/media/rtindex.htm