Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The flute in a dream is strife and calamity. Hearing it indicates bad news. Playing it indicates amusement and falsehood.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The flute indicates a man who announces news. If its sound is good, it is good news. If it is ugly, it is bad news.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The flute is interpreted as falsehood. Whoever sees himself play it is speaking false words.