Today I was just to curious to wait till Ubuntu 8.04 came out, so I downloaded the release candidate. After installing the software and downloaded all the necessary plugins I started an MP3 to look if I still got the same problems as I had in 7.04 and 7.10. The problems there where that the sound only came from the headphone out. Of course there was a fix for it, but it was a bit hard to find.
So for all of you with an intel-hda and especially with a the Tecra A8 laptop, a small how-to enable sound from your ordinary speakers.
sudo cp /etc/modprobe.d/alsa-base /etc/modprobe.d/alsa-base_backup
sudo gedit /etc/modprobe.d/alsa-base
add the following line at the end of the file
options snd-hda-intel enable=1 index=0 model=basic
reboot and voila, there should be sound.by