highlighting notes in pdf, synchronized pdf and midi playback

[Janek Warchoł]

Hi,

i'm pretty sure that i saw a program that could highlight objects in
compiled pdf corresponding to the selected lilypond input, but i
cannot find it now. Am i right? What was it?
Also, is there any program that would play a midi file and highlight
corresponding notes in pdf or do something similar? It would be useful
for more convenient playback of LilyPond-generated scores.
The only thing i found is
http://gitorious.org/qt-pdfviewer
http://qt-apps.org/content/show.php/PDF+MIDI+Player?content=134343
but there are no binaries and i was unable to compile the source...
I'd be grateful for any help.

cheers,
Janek