The abc still does work, BUT you have to go through some hoops for abc to be used from a post on-screen:

1) Drag your mouse (highlight) the tune on the screen, beginning with the "X:" line, down to the
first blank line (which signals the end of the tune).

2) Paste (from the clipboard) to a new file, lets call it "whenallmensing.abc" (or whatever).

3) Edit that file, with a text editor (not a word processor) to:
        Edit out the initial spaces of every line of the tune.
        Especially the header lines starting with "X:", "T:", "K:" ...

4) Now the file should work just fine.
In fact it just did for me, using programs "abcm2ps" to create a post-script, printable file,
and "abc2midi" to make a midi file. Program "ps2pdf" will make a pdf from the ps file.
(I am only vaguely familiar with M.S.Windows.)

=Bob (somewhat of a command-line-junkie)

(semi-technical:) The reason that screen swipes of abc code don't work is that the "Reply to Thread"
box seems to put a blank after every <br>, which gets tacked to the front of the next line.
Whether or not you are using Automatic Linebreaks! The abc specs are very touchy about the header
lines beginning in column one. (Actually, the "note" lines work fine with initial spaces, but just
to keep things simple...)