me too! thus i started to write a cross platform winamp clone (well, a simple one, mainly for its wonderful library management). also banging in a few audiophile goodies (better eqing, visualization)

i think the kids these days just stream everything...

its not on github yet but if anyone is interested in helping out shoot me a line! (stack is js/web audio/electron) -- perhaps not super "lightweight", but its not bad, and its what i know ;$