Dratty cold virus has me back in bed at home (OK, sitting up in bed right now) with a very sore throat. I knew as soon as we left the driveway that I should have stayed home in bed, but I spent the morning profitably finding Arabic booksellers. I've settled on 3: Multicultural Books will buy titles we specify in several languages, provide a transliteration card and an OCLC number; Schoenhof's will do the 1st two items; and Al Kitab (Middle Eastern materials only; can't tell what they will provide, but their website is in English and they list their materials offered, with transliterations, for the U.S. buyer).
OK, now how about sheet music vendors who will provide cataloging as well?
Back to sleep now, really. : (