With Ubuntu 9.10, based on my experience, sounds work at the same time for multiple devices. If you have Ubuntu 9.10 and Skype 2.1 beta, all you have to do to get the microphone to work is, right click on the volume icon in the top panel next to the date & time, select preferences, click on the input tab, uncheck the mute option next to input volume, if it’s checked. Now talk over the microphone and see if there are any movements in the bars next to input level. If not, click on the connector option and try with other options available there. For me, the default option and Microphone 1 didn’t work. Microphone 2 worked. You’ll see the movement in the vertical bars next to input level. Once you get that working, Skype should work fine.
