The display on the CD player will always show the track number and the time elapsed in that track. A single press will skip one track, and holding a button will make the tracks whiz by. Other neat features abound. Many CD players have 10 number buttons labeled 0 - 9 which enable you to enter a one or two digit track number and start playing that track immediately without any searching. You might use this feature to study a particular aspect of a concept or pick up where you left off last week.
Most CD players have a random play feature.
Many CD players have a remote control which is useful if you don't have an extra person to work the player. Just clip it to your belt or hold it in your hand. The remote will save a lot of dashing when fewer than 9 people attend a workshop. Most remotes duplicate every function of the player itself. Some CD players have a magazine which allows you to load several CD's at once.