When playing lossless WMA files from my PC through the pms, the sound quality is very average - much like a low bitrate file. The sound quality for tracks ripped and stored on the PS3 at AAC 320kbs sound fantastic. Surely the PMS should be able to transcode lossless files to an equal quality as they stream? I have a wired network, 3.4ghz quad core pc running xp, so dont think there should be problem there. Will choosing a different audio engine help??