i've been trying to work this out for months now, ever since i switched from windows. in my opinion the lack of file info options in finder is the biggest flaw in the OS, in particulat 'artist'. i work as a DJ though, so this is extra important.
i will keep trying and if i find a solution i will let you know. i'm trying out a dew finder alternatives at the moment, but i've tried this before and nothing has remedied the problem.