Hi Nefabit,
Great question...and also great to note that it's good to find out what "the boss" likes. :) If the owner likes Egyptian, the owner (the guy with the money) likes Egyptian.
One really useful compilation would be Very Belly Belly Dance. www.amazon.com/Very-Belly.../ref=sr_1_1
Other Artists/producers with good stuff for you: Jalilah Raqs sharki series, Yasmin's music and Horatio and Beata's music (especially after vol 8). Jelilah and Yasmin are available on Amazon.
Yasmin's come with 30plus page booklets- which make it worth while to buy the CD. www.serpentine.org/yasmin/M...ptian.htm
Jalilah's are available for download (instant gratification!) www.amazon.com/Jalilah/e/...mus_gen_pel
Horatio and Beata's are available from Tatikastreasures.com I've bought from the numerous times and it's always a pleasant experience with speedy delivery.
For pop- it depends- Egyptian I like Hamada Helal, Saad el Soghayer a lot for that Egyptian Sha'abi sound. For more pop- Lebanese pop is really common to use- Nancy Ajram, Rola etc.
They're available on maqam.com (include listening clips) and some also at rashid.com

Soul of Cairo has some great Egyptian style songs on it with a wide variety of moods and tune types.
Any thing by Serpentine (those CD's have heavy rotation in my sets)

I agree with Samira's recommendations of Jalilah's "Raqs Sharqi" series and Beata & Horacio's "Oriental Fantasy" series.

There's also Leyla Lanty's Golden Days, Enchanting Nights CD. See www.leylalanty.com/CDDVD.html

And Bahaia in Texas has produced "Ya Bahaia" which you can get from Amazon.

Nourhan and Yousry Sherif's "Wash Ya Wash" series of CD's is good.

Hollywood Music Center sells some CD's by Cairo Orchestra that I like.