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. Our suggestion is that if you already have a CD player, use it. If you're acquiring a new one, try many of the ideas listed above on various models in the showroom before making your decision. The players vary in capability, and the sales people won't have a clue about why any of these features might be important. The CD itself is organized with a separate sequence on each of approximately 50 tracks.