Ok, trying out the Twonky Beta 6 now, its ticking along nicely so far.
Music tracks: 57249 - 0 days, 1:37:44 hours
So a few more to scan for yet.
Not sure how good this solution will be mind, surely its going to take a very long time to access any songs from remote devices with a 35mb cache already?
I now have PlugPlayer on my iphone too (£2.99 from itunes store) to play all my music from tonky, listing takes a long time. But to be honest the main thing i want is a decent media search solution so i can find tracks. My collection needs streamlining when i have time really too.
This then made me think, is there a VPN server for the sheevaplug which is compatible with the iphone, correct me if im wrong, but would this not then allow me to access my twonky media from anywhere on my iphone via plugplayer?
probably be quite handy for other things too!

I really would love to solve power saving for the usb drives also so i can turn the cadys off completely (they support it on windows)... but this seems to be a dead end on the sheeva plug which is a big shame.