Is it possible to record my voice from my microphone and the sound from the conference call (= my friends’ voices)?
No. Not reliably. That’s the problem. Skype likes to take over the sound channels in the computer. That’s why it’s so successful. It doesn’t just ask the computer for sound channels, it demands them. That’s why Skype works on computers that are mis-adjusted or set badly.
Pamela makes software such which records both sides very well, or used to until Windows 10.
http://www.pamela.biz/en/products/
Also other software.
This isn’t as simple as everyone thinks it should be.
I went around the software and services problem by giving Skype its own computer. This brings us to the mixer and microphone that you posted up the thread (wide picture).
The computer on the left is playing music into the podcast and recording the show in Audacity (Play and Record are independent tasks and this works just fine). The computer on the right is “managing” a Skype connection. It’s happy doing that.
You can’t see the microphone because it’s a little head-mounted entertainment (not gaming) microphone like they use on the TED shows.
The mixer in the middle is a little magic. You need to find one with a separate Effects-Send divorced from the rest of the show. This allows me to create a Mix-Minus, a mixed show minus the Skype voice, so the Skype persons can hear you and the music without the Skype Echoes.
If you balance it just right, it can sound very good.
Are you sure you want to know all this? It’s much simpler to get each person to record their own voice.
Koz