I have 10.04.3 with alsa 1.023 kernel & 1.0.24 lib/util for last 6 months ..
You want:
linux-backports-modules-alsa-lucid-generic
this will pull in the matching package (to your kernel repeatedly)
This works fine with iQuik ppa.
I use lucid proposed packages.
If you are in a hurry then search for HDMI audio solutions with XBMC Live but only look at any extra ppas, a lot of the other info is bollocks.
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