GLC. Minecraft, Skype or me - one of us is doing it wrong
 

I just stumbled upon a very strange behaviour and I'm completely clueless at the moment.

Situation: I (or more correctly: my son) want to do screenrecordings of Minecraft, speak and record live comments on it and also record audio of other players in a multiplayer game that are connected via Skype.
Recording of screen and audio (game sound plus microphone) works very well, but as soon as a Skype connection is active, no audio is recorded at all, neither game sound nor microphone nor the Skype conversation (this part edited after doing some investigation ;) ).

As long as Skype is just running in the background without an active connection, everything is fine.

System setup (every software fully updated):
- Xubuntu 12.04
- Minecraft 1.7.2
- glc
- 3 audio devices present according to aplay -l:
- 0: internal audio (AC97)
- 1: PCM 2900 USB (audio mixer as sound source, microphone is connected to it)
- 2: Nvidia HDMI audio
- System sound input is set to PCM 2900 master (also for Skype)
- System sound output is set to internal audio analog
- Minecraft is started with glc-capture -a 'hw:0,48000,2;hw:1,48000,2' java -jar /path/to/minecraft.jar

Any ideas appreciated :)

Few things to know about skype
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Sorry I can't help you with your problem but at least I can tell you something about that particular software.

Regards

Thanks for your reply, ukiuki.
I know the risks of Skype and have taken some precautions. Anyway, in this case I left that decision to my son after telling him about these risks.
An alternative would be Teamspeak, though I doubt the security situation is much better there.

Concerning the technical problem: it all seems to reduce to Skype catching or muting all audio recording. There appears to be no option in the GUI to change that behaviour.
So, still help is appreciated.