Al Mashriq - the Levant - Lebanon and the Middle East:Extensive information about the culture of Lebanon and the Middle East, including a section on Arabic music.
Acoustic Instruments: Descriptions, photos and players of many folkloric instruments, among which is the oud. There's a list of famous performers for each instrument, and some pictures.
Arabic Maqam World: Includes information, notation, and RealAudio samples of a couple dozen Arabic musical modes.
Arabic Music Information Source: Numerous reviews, RealAudio samples, and news stories on Arabic music, particularly popular artists and Khaliji stars.
Bisher Rihani: Featuring links to songs and music resources, sites on Arabic culture and entertainment, live TV, radio and newspapers. With MP3s, RealAudio and MIDIs.
Jas's-- Middle Eastern Rhythms FAQ: ASCII text renditions of Arab-style doumbek rhythms with MIDI examples of some.
Middle Eastern Music: Translated Song Lyrics: English translations of the lyrics of 40 popular Arabic, Turkish, Greek, Armenian, and Hebrew songs. Some are accompanied by RealAudio clips.
Progressive Music of North Africa: Contains sound clips and biographies of pioneer and contemporary performers from the region.
Quick and Dirty Guide to the Doumbek: Written guide on how to play Middle Eastern rhythms on Egyptian percussion instruments.
RomanySaad.com: Features Arabic MP3s and streaming radio, song lyrics translated into English, and artist pages for Amr Diab, Abd al-Halim Hafiz, and Kazemel Saher.
The Arabic Music Page: This was formerly known as the FAQ (frequently asked questions) for the rec.music.arabic newsgroup. Good introductory information to Arabic music.
The Egyptian Castle: A site focused on Egyptian culture. The music area offers MIDI and RealAudio files, and information about leading artists. Also business, travel, live radio, live TV, shopping, and history.