If I have 2 MySQL server and I want to replicate their database to only 1 server, is it possible? I cannot afford to have master-to-master only because I still need to replicate one more machine but I do not have anymore more machine for replication so I'm thinking if these 2 MySQL server can be replicate to only 1 machine.

If this is not possible, I guess I've no choice but to have two mysql daemon on that machine

yes it's possible.
if your server is strong enough, you can use virtual environment.

I haven't experience installing virtual apps like VMware,Xen or Virtualbox to a machine with no GUI. Is it possible I can install those virtualization software even the master has no GUI? Also, Can I do this via SSH only?

If virtualization is not possible, any other suggestions?

First:
You can install VirtualBox using SSH, and every administrative purpose in VirtualBox can be done via terminal.

The tricky part is when installing guest OS on it. But, you can make guest os on machine with GUI. Made every necessary adjustment, like setting vnc server on it, etc. Then copy the guest vdi file to the server.

Using VirtualBox tunneling, you can access guest VNCServer from your workstation.

Second:
You can install VNCServer in the master.
Access VNCServer trough SSH tunnel.
Install virtualization using gui environment.

Three:
If virtualization is not possible, may be using two sql daemon is the solution.
As far as i know mysql is one master with many slave, not many master one slave.

would you recommend having two mysql daemon listening on different ports and bind to different ip's?

yes i would recommend that solution.
in fact i'm going to try it myself.
i'll let you know the result of my experiment.