I know this is a bit of a strange request (given the dominance of the SNDH format), but I really need your YM files!
So if you happen to have an archive of Brainbug YM Archive before it vanished, I would much appreciate it.
The reason is that I'm helping out someone who has written a YM replay class for ActionScript3 (Flash). It is working really well at the moment and we have a lot of old classic tunes playing, including a couple of digi drum tests. But the more we can throw at it, the better it will get.
The source code will be released as open source (like all our projects) and will allow for complete YM replay on any web site (without the need for the ST Sound browser plugin!), or you can use it in your own Flash projects.
PM me here if you can help please