The invention relates to a process for controlling digital rights of the \u201cPlay N times\u201d type for a digital audio andor video content, referred to as controlled content, the controlled content being consumed by a consumer on a consuming device or on another device delegating the controlling of these rights to the consuming device. One end of the body has an earplug-accommodating opening and a power-supplying terminal. The first slot extends in a direction which is substantially mutually perpendicular to a direction in which the second and third slot extends, and the first member extends in a direction which is substantially mutually perpendicular to a direction in which the second member extends. Thereafter, the analogue electrical signals are converted into digital electrical signal.