Allah should be spoken to aloud or not?

This is a very silly allegation made by the writer. He says that there is a contradiction in the Quran because in one place it says to pray aloud and in one place, it says to pray in silence. There is no contradiction but the contradiction is in the thought of the writer. Muslims pray five times a day and among them, some are prayed loudly and some not loudly. For more information, just observe a Muslim at prayer and you will understand what it means. The Muslims have no problem in understanding this simple message but the accuser has severe problems. Having a problem with simple messages is in fact the real problem here. If this problem is addressed, this book wouldn’t have been written at all.

The writer makes allegations against the spoils of war. This is a lengthy topic and can be found in the link below:
http://www.answering-christianity.com/adeel_khan/Rebuttal_to_Sam_Shamoun9_and_Jochen_Katz.htm

If someone has some problem with anything in Islam, he/she must ask knowledgeable Muslims about it with a pure intention instead of writing a book and making a cheap name of himself!