BENI AMOS' Sunset, enjoy his vocalization. You can build a web project from that.
A:
There is another solution. See also this document.
You can record the video with voice (by Chrome you can record the sound from the webcam, or you can record from a microphone) and after you make a edit you can save the video.
Audio created with external software doesn't play back on Youtube, as far as I know. You would need to convert your audio to a format that can be played on Youtube.
Please see the following question:
Is there any software available which can make mp3 files playable on YouTube?
Related links: