Cause there is no other option :/ iTunes is 2 cpu consuming, no folders in playlists, its not very beautiful though intuitive and simple to use. Amarok is not yet avaible for windows. Winamp media library is crap, and mediamonkey has really stupid interface. EDIT:Most players are ugly as hell (maybe except winamp & itunes), and skins for the ugly-ones are also ugly
In fact, only thing that I like in foobar, is its customizability, which is quite good I guess, but since I have very little skills in programming, I have to use plugins by others, which doesnt suit my needs completly.
Anyway, after one week of modding Ive managed to have nice UI (mogelbrod panel UI), writing custom tags to id3tag, (rating, date added, play count), jump to currently playling song, playlists organized in folders, total tracks in playlist info, some autoplaylists (some not :/), artwork display, nice & small spectrum analyzer (though I would like something better, but if foobar handles vst's well, it shouldnt be a problem), popup info, iPod support (quite nice! tags mapping and syncing)
Things I cant get to work: autoplaylist based on total size, playlist with random albums, autoplaylist based on other autoplaylists(see my post in playlist tree plugin), drag and drop to playlist (!!) [not doable yet through playlist tree, which I use), iTunes-like search (doable using facets in default UI, but not in panels UI), easy way to create autoplaylist, auto-rescan library, cash mashine, pool, free drinks, getting playcount from ipod (heard it can be treaky or eaven not possible?), graphical representation of library (

),
Things I havent worked on yet, but still want it: simplified eq (2 many faders! but again i could use vst), sorted playlist (heard its doable), converting flac/any other to ALAC (dunno if possible), powerful tags & files managing (I think no problem with that, but havent tried it yet so cant tell), multiple genre tags), better iPod support (I can only wait for newer foo_dop).