We've checked the foobar2000 SDK, but it seems quite complicated to use. For such a minor improvement we simply find it too awkward and complex to deal with. Maybe we're looking at the wrong bits and pieces though, so if you (or someone else) can provide a short source code to detect the information you're looking for, we'd be happy to implement it.
Depends on the shit being done. What do they want, song title display on track change?
I have no idea how AIDA64 works but if it can read the contents of a text file, have a look at this...http://skipyrich.com/wiki/Foobar2000:Now_Playing_Simple