Please visit http://esupport.sony.com/ for the new releases and latest updates. Thanks,
>Joffrey

Hi! The Sony CDPCE500 supports mp3: 32kpbs-320kbps, VBR. -Anthony

Hello MiMi! It is possible to connect this unit to the audio in port of your speaker by using either the analog audio out or the Digital optical audio out ports available on this CD changer/recorder instead depending on the input available on your speaker system.~Jeannette

Yes, it is possible to use this unit with your wireless speaker if it comes with an amplified audio IN port available for external devices, since this unit provides the option to use either an analog or digital optical OUT port for connection.~Jeannette

Good afternoon, this product comes with a DIGITAL OUT OPTICAL jack using a digital optical cord or the ANALOG OUT using an audio cord that can be used with a compatible external device. This is a matter of the hookup between the devices, we will recommend to visit the following link on page 9 which will show you how to connect it: https://docs.sony.com/release/CDPCE500.pdf ~Edward

Hi PEDRO CHORIZO, you can play music on a USB device, or transfer music from a disc to a USB device. Also, you can erase audio files/folders on a USB device. Please refer to the manual below for further details.
https://docs.sony.com/release/CDPCE500.pdf .
Dave

Hi ARagz, It's a Sony 5-Disc CD Changer/Recorder. Please check this link for the specifications of this unit https://docs.sony.com/release/specs/CDPCE500_mksp.pdf. Dave