if losless is the apple format (which i believe it is) then it works on my ps3. I played them directly from my ipod. only problem was not being able to decipher what track/artist they were but the music played fine.
WMA lossless does not play on my PS3. However, WAV at 48/16 will (pre-loaded to an external USB HD and then copied to PS3 HD). Format HD to FAT32. The machine must surely have the capability: come on, Sony, let`s have the "enabling" software.