I've been using FM.72's fantastic utility discussed here http://forums.rokulabs.com/viewtopic.php?t=9515 for quite some time now to back up presets and sync presets across multiple soundbridges.
But the problem is that FM.72 (or any other developer for that matter) can't do much of anything with "playlist presets". FM.72's utility relies on a http post to the Soundbridge web page for syncing, so if, for example you wanted to change a preset from a radio-type to a playlist-type by syncing, it won't work because the web page doesn't make the type updateable in that instance (i.e. not allowed to create playlist presets on the web page...only via remote control).
I've also noted that in the current RCP documentation, functions for working with playlist-type presets still aren't exposed to 3rd party developers, even though they've been available since 2.5. The statement in the doc is... "Complete support will be available in a future software release".
So I actually have 2 requests:
1) Finish RCP and expose the complete preset functionality so some of the bright 3rd party developers can improve their products.
2) Actually offer a Roku-developed preset backup/sync utility that can be run from a web browser.
It's really inconvenient that the only way to create or modify playlist-type presets is via the remote.