I am trying to get sound in both Skype and Enemy-territory, simoutesly. I am starting skype with artsdsp skype. However when I start et with "artsdsp -m et", Enemy territory doesn't start, and when I kill it, it returns DOUBLE SIGNAL FAULT: Received signal 15, exiting...

I also get this error, which is probably more interesting:
------- sound initialization -------
*** glibc detected *** free(): invalid pointer: 0x09428d10 ***
Received signal 6, exiting...
/usr/local/bin/et: line 5: 6295 Killed artsdsp -m ./et.x86 $*

Anyone know how to fix this problem?

I don't have to use ARTS to mix the sounds from Skype and Enemy-Territory. Using ARTS is only a matter of making it work. Other suggestions is appreciated.

Well you could try another sound routing daemon like esd and see if it works with ET

By using esddsp I can start ET, but I get this error.

------- sound initialization -------
- using device default
- using device default
Sorry but your soundcard can't do this
------------------------------------

I have read many threads about this issue, but nothing works for me .

Well try playing it the esd configuration ...
I run esd as a daemon so it spawns automatically when an app tryes to access the osund card! It works perfectly with xmms and UT ... Try doing that and run ET without the initial esddsp command ...

There is my esd configuration
[esd]
auto_spawn=1
spawn_options=-terminate -nobeeps -as 2
spawn_wait_ms=100


Hope that helps!