i had sansa c240 but i broke it unfortunately, i used it with rockbox software, which had last.fm support
it's somehow really important thing to me, and i believe i'm not the only one
i just bought sansa clip and unfortunately it is not supported by zenses (software which uploads played song titles to last.fm)
and it is not supported by rockbox currently
maybe it would be possible to add id3 tag logging to txt file?