I tried to figure out what the problem is and I did some working around to fix the problem.
The solution is:
amixer -c0 sset 'Input Source' 'Front Mic'Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Mic' 'Front Mic' 'Line'
Item0: 'Front Mic'
This should work for everyone who is using Fedora 11.