Thank you all who replied my last messages.
Now I am back to plain alsa, but no two programs can use it at the same time. Alsa drivers are built on the kernel, and I have the following packages installed:
media-libs/alsa-lib-1.0.24.1:0
media-plugins/gst-plugins-alsa-0.10.35:0.10
media-sound/alsa-utils-1.0.24.2-r1:0.9
The two first ones were puled by emerging "alsa-utils".
I have lost "/etc/asound.conf", and I guess this is the key. Looking to which package it belongs to, "equery" found none. I have put a quite simple version (as explained here: http://en.gentoo-wiki.com/wiki/ALSA#Default_Sound_Device)::
pcm.!default { type hw card Intel }
ctl.!default { type hw card Intel }
Any hints on how can I get all programs to mix up as before?
Thanks again
Francisco
--
"If you have an apple and I have an apple and we exchange apples then you and I will still each have one apple. But if you have an idea and I have one idea and we exchange these ideas, then each of us will have two ideas." - George Bernard Shaw