Why do I get the feeling you did not do any research on this, I used Google and got 460,000 hits on my first try? I would suggest you get the Arduino cookbook and read it, what you are trying to do is mostly in there. As far as the Attiney driving a speaker, how? Include a schematic, not a frizzy thing, and we could possible give you a lot more help. There are many ways to do this, this is one. Purchase or borrow a UNO from one of your friends. To program the ATtiny85 without Arduino, we would first have to upload a bootloader into it using an Arduino UNO board (or comparable borrowed from friend) , this is a one-time process and after this is done, we will not be needing the UNO board again. Boot-loader is a special program that runs in the microcontroller that has to be programmed. This should get you started.