I need to simulate an audio amplifier put my LTspice not have many of the various BJT's, where I find these new components?

 

I do not have these BJT's

 

Some manufacturers provide Spice models of their products. Start there.

Try Googling for "2SC828 Spice model"

btw: horrible schematic. I cant tell which crossing wires connect and which don't.

 

A good free source of Spice models is the Yahoo LTspice User Group:- LTspiceFiles : LTspiceFiles

 

where I find these new components?

1. You can google - from other libraries for example. OrCAD and Multisim come to my mind;
2. OEMs sometimes publish models for their devices;
3. You don't need them: unless you are tapping into something special about a device, you usually don't need that specific of a model. And if you do, you are better off building the actual thing than simulating it.

 

See site WWW.Ltwiki.org. ( http://ltwiki.org/index.php5?title=Components_Library_and_Circuits )

I made a good selection of items. Practically, I scoured the internet and picked the most popular in audio transistors.