debian-m5-v3e.img.ext2 is what I am using right now.. I think its the latest.. supports sound.. although sound support is there frm "v3d"..

have a look at this video
http://www.youtube.com/watch?v=159h_t0hHPQ

from here - forum.webosroundup.com/index.php?threads/word-processing-and-more-on-the-touchpad.593/

although I haven't used it on touchpad(too complicated fr me ;p).. & cuz I don com out of ICS
but
its somehow related(created i suppose) from LXDE for N900..
but its supporting touch scrolling(maybe its a webos feature but its nice)
wish we had it on N900 LXDE too...