well,
after one day of compilation, the last.fm client seems to work !
sources are here :
http://www.last.fm/download/but during compilation i saw some alsaaudio.h missing error messages
and yes, as i launch it it complains about alsa_output missing and it disables audio. but it seems to work apparently !
i've just apt-get install libasound2-dev, and i'm on my way to compile it again!
i'll let you know about it