Anyway, I'll get to the point.
Does Christianity have any scope that other religions may be right? No! This is based upon who those of the Christian faith, believe Jesus Christ to be.
Does the Christian doctrine mean that all Muslims, Jews, Hindus, Buddhists, Sikhs and all the believers of other religions are going to Hell? Again, this is based upon who we believe Jesus Christ to be, and the veracity of His statements. "...I am The Way, The Truth, and The Life, no man comes to the Father but by me." It matters not what label one puts on their religion, if they deign to approach Almighty God, it has to be as stated by Jesus!
If so, why would the all loving, compassionate God that you believe in, condemn a person to everlasting Hell, just because they were brought up to believe that they should worship Allah, rather than God (I know that Allah means God, but you know what I mean).
For arguements sake, if you were born in a Muslim family/city/country, and you were brought up to believe that the Koran is right, in the same way we're brought up to believe that 1+1=2, and you live a moral life, what justice is there that you will be eternally damned because of the misfortune of being born in the wrong place? "...for since the creation of the world His invisible attributes, His eternal power and divine nature have been clearly seen, being understood through what has been made, so that they are without excuse...." Every person who does not choose to believe on Jesus Christ, says to the face of God; "I don't care that you let your Only Begotten Son, die for my sins. I choose to live my life the way that I want to!" People seem to think that because God is love, they can summarilly blame Him for being unjust, while they (completely and conviently) forget that God allowed His Only Begotten Son to die (something He did not have to allow), so that those who accept His free offer of mercy and grace might once again be in communion with Him!
Is there a possibility that all religion is ok, as long as you believe in something, or is there a set in stone right and wrong? To be honest it hurts my head just thinking about it, so any help would be amazing. If a person wants to be "inclusive", sure, anything is fine for religious beliefs. However; even with some of those religions which you mentioned as "...going to hell..." require exclusivity. Syncretisim, that is mixing other beliefs in with their belief in the One true God, is what got the Children of Israel into trouble in the Old Testament, and now again under the guise of being kinder, gentler, and more loving it rears it's ugly head in the Christian faith. If God is all powerful, why do we the creation insist on saying He doesn't have the right o make the rules the way He wants. Hmmm?
Thanks.