Cant work as drawn. No simulator needed. I'll let you discover the screw up.
To simulate a mic, use a voltage source that makes the same output as the real mic.
To simulate an audio (non-critical) circuit with a transistor you don't have in the library, look up the data sheet for the transistor, and find a similiar one that is in the library.
A 1N4148 or 1N4007 will work for almost any Silicon Diode.
For a first order approximation, use a 8 resistor in place of the speaker. If you can measure some physical parameters of the speaker and its enclosure, you can make a more complex model that accounts for resonances, speaker box tuning, etc, but just get the basic sim working first...