Hi daniegevem,

the playable CDs with this unit are: CD-DA (Audio CD) , CD-ROM , CD-R/CD-RW. This product is designed to play discs that conform to the Compact Disc (CD) standard. DualDiscs and some of the audio discs encoded with copyright protection technologies do not conform to the Compact Disc (CD) standard. Such discs may not be playable by this product. The unit has DIGITAL OUT (COAXIAL):RCA jack/0.5 Vp-p/75 Ohm'

Sony Support EN

The Blu-ray player does not have an analogue output, but the sound is output digitally via Cinch, so you can use a normal stereo analogue Cinch cable to connect it to a digital amplifier input. Or simply connect it to the HDMI input of a surround amplifier, or to a TV, basically anything goes. But only digital.