ok, here is my idea. i want to make a tab that shows the line-up of currently playing song (producer, singer etc) with trackinfo mod.

is it possible to make them like a links - when i click on a name in trackinfo mod, quicksearch searches for this name in library.

thanks in advance!

foo_ui_panels. Track Display panel (trackinfomod is obsolete) and it's syntax. Maybe. You can click areas. But I doubt it can pass arguments to another component. Read it's wiki entry.
But what is the goal of finding a song that is currently being played?

Maybe you're seeking for a functionality like "search for same artist.../title..."? Then you can do it. A component offers this to the cmd line interface. Just don't know which...

i play a song which is produced by eg Steve Albini. if i click on it, it searches and shows other songs where he is featured.

i don't think it actually needs to provide argument's to other component as other components can get %artist% and such tags themselves for normal songs. so i guess area buttons would be the way?

it would be great tho if some kind of exposing arguments did exist, as i'm not aware of any component that can pick up alternating tags from radio streams, and i've been begging for solution for this for eternety