I'd suggest skimming through last.fm, you can listen to a short part of every song there, you can try listening to polish radios.. there was already one thread about that ( use search function ) there isalso a few threads about polish music, and you can look every band up on youtube..
hey, I'm on Last.fm too :)
I think I have two albums there and one EP, have to check if it has arrived correctly when I uploaded them. You can download them for free ;)
>^..^<
M-G (shamelessly marketing)