CDPlayer is started as every other GNUstep application, too. It will try to find a playable audio CD in any of the configured CD drives of your PC. If it has found one, the track list will show the tracks and the main panel will look like in the picture in section "The main control panel". If all drives are empty, the main panel looks like this:



On startup you can supply the argument 'Device' containing the path to your preferred CD drive, e.g. 'Device=/dev/cdrom'. This drive will then be checked first for an audio CD.

CDPlayer.app (or rather AudioCD.bundle) will then continually check the configured (see "Configuration" for details) for a change, i.e. it will detect itself if you remove the CD or insert a new one.

CDPlayer.app's main control panel resembles the front panel of your home stereo's CD player. Only, it is much simpler. Thus, it should be easy to understand.

The index of the current track.

The already played time of the current track.

Got to the beginning of the last track or one track backward.

Play the current track.

Pause the currently playing track.

Jump forward to the next track.

Stop the currently playing track.

The track list is a list displaying the CD's tracks and their respective length. The currently played track is printed in bold. The track list has no further functionality. In particular it is not meant to be any kind of a smart play list. It is just a dumb list.
Actually, there is one function you may find useful. You can select tracks you wish to copy onto a CD, and drag them to Burn.app's CD description window.
If you do have a connection to the internet, you may also do a query on a FreeDB server to have the track titles displayed properly. This will work only, if you have chosen a FreeDB server in CDPlayer.app's settings.

The Cddb ID of the current CD or 'No CD' if tray is empty.

The list of tracks with generic title and Duration.

The currently played track is displayed with a bold font.