If you were expecting to hear your playing thru your PC speakers, change the playback device back to your soundcard. Pero di pwede real time monitoring dahil sobrang tagal ng delay (or latency, tama ba?). Pag tumugtog ka ng nota, after a few moments pa lalabas yung tunog sa PC speakers.
Kung gusto mo marinig gitara mo in real time, no choice but to plug the G2 to your guitar amp.