Or like when you're in a que of Dota och Counterstrike, that it will give a clear soundeffect when a game is found (when its your turn) that can be heard trough alt tab in windows aswell.
Edit: but yeah i guess the ques can get so long that u might wanna leave your PC, so sms might work as an alternative, tho, im not sure if FC can send free sms to ppl from diffrence countries, but most ppl have smartphone that beeps when u get a Email, maybe that could work.