I see that ppl have gotten sound working on the ia-1. Need 2.4.17-pre1 (or later :) and use via82cxxx sound module.
Will compile tonight and see what it does :-)
Regarding linux on jornada 720, serious development there.. should have it running familiar linux distro (v.5) by end of next week!!
Hacking madplay itself to add buffering (needed for battery-life preservation on iPAQ with all the hits it does on udrive or over nfs wireless mp3 sources).