Cok Free MP3 recorder is free software for recording sound from microphone or computer sound card. It is the only freeware which can record sound from sound card in windows 7 and windows 8. You can use it to record your voice from microphone or record music or film dialogues from computer. Also you can use it to record voice conversations in VoIP software such as Skype Yahoo Messenger Google Talk OICQ QQ etc.You can set it only record input voice from microphone also you can set it only record output sound from sound card. What is more interesting you can set it record both input voice from your microphone and output voice from your computer. This feature is very useful when you record VoIP software voice conversations.