I won't get round to adding a dedicated OPML export function. (Sunrise's successor will most likely support OPML directly.)
I do have an XSLT stylesheet for converting SDLs to OPML. (See attachment.) You can use
MSXSL to run XSL transformations from the command-line.
I don't have the time to write detailed instructions, so this example will have to do:
Code:
msxsl mysites.sdl sdl-to-opml.xsl -o mysites.opml
This converts "mysites.sdl" to "mysites.opml". Wrap this in a batch file and you have an easy way to convert your SDL.