Sergusnet

Hi I got Atari 800. Can I download games directly from my computer through the SIO port of Atari? I converted .cas to .wav (out only mono) using cas2wav, and then through Foobar I want to load into Atari. If possible, which contacts should the SIO send a signal from audio card. Logically, at 3 (Data Input) and Ground. Is this possible and can I damage Atari?