I want to participate too ... first if you can put the "Requiem For a Dream" Theme song, Would be amazing to fight with this one !!!
Some research for you:
Realistic Medieval Songs :
http://www.waraok.com/son/nestinarskohoro.mp3
http://www.waraok.com/son/Ben%20Pode%20Santa%20Maria.mp3
http://www.waraok.com/son/cunctisimusderobeedebroons.mp3
http://www.couleurs-moyen-age.com/albums_discographie/page3.html
http://www.couleurs-moyen-age.com/albums_discographie/page1.html
http://www.couleurs-moyen-age.com/albums_discographie/page2.html
on that three page you have a player, you can just heard them but with Audacity (freeware - http://audacity.sourceforge.net/ ) you can record the sound. I can't explain you how, I use some commercial programs for that but sure you can found that on google
Arabian Traditional Songs
http://www.ournia.com/mp3/music/rabih-abou-khalil-01-arabian-waltz_0dfe95.html => french site - download = télécharger
http://www.ournia.com/mp3/music/rabih-abou-khalil-up-the-downstair_1c3920.html => more than 52 minutes song !! very good for map ... but perhaps it's a complete album i just heard 6 minutes, and they are blank so you can cut what you want with audacity
http://www.musicme.com/Hossam-Ramzy/titres/Ahlam-Ghernatah-t2181470.html => record it with audacity
http://www.musicme.com/Hossam-Ramzy/titres/Ghannili-Sheway-Sheway-t2181471.html
http://www.musicme.com/Hossam-Ramzy/titres/Hossam-Ramzy---A-Step-In-Time-t1716136.html
http://www.musicme.com/Hossam-Ramzy/titres/Hossam-Ramzy---Time-Zone-t1716143.html
http://www.musicme.com/Hossam-Ramzy/titres/Khusara-Khusara-t354907.html
http://www.musicme.com/Hossam-Ramzy/titres/Men-Al-Bourkan-t836371.html
http://www.musicme.com/Hossam-Ramzy/titres/Sahara-Groove-t836374.html
http://www.musicme.com/Hossam-Ramzy/titres/Sarvar-Sabri-&-Hossam-Ramzy---Udo-Jam-Buttie-t1716138.html
http://www.musicme.com/Hossam-Ramzy/titres/Sehr-Oyounik-t836376.html
http://www.musicme.com/Hossam-Ramzy/titres/West-Naima-t583615.html
Stuff for made your own music (you or someone else
)
http://brassy.perso.neuf.fr/midibaroc/liste.html => sample from Baroque style ( XVII century )
Various song to download
http://www.jamendo.com/en/tag/medieval => lot of album to download for free. Some are just one instrument, other are more orchestrated, some are very traditional, others are rock or techno ....
Sorry I don't fine traditional Mongol Music without voice ... but here is some issue to find something in European Medieval Music and Traditional Arabian Music ... If I find something else I remember this thread