a wearable support, for carrying at least a portion of the interface, said wearable support comprising an eyeglass frame, at least one support arm, and at least one speaker supported by the eyeglass frame with the support arm, wherein the support arm comprises a first segment attached to the eyeglass frame at a first coupling and a second segment attached to the speaker at a second coupling, wherein the first coupling permits the support arm to be rotated to move the speaker away from the eyeglass frame, wherein the second coupling permits the speaker to be rotated with respect to the support arm about at least first and second axes, said first axis being perpendicular to said second axis, and wherein a distance between the first and second couplings is adjustable by the wearer by moving the first segment with respect to the first coupling;

at least one data port carried by the support and configured to receive data from at least a first and a second source, the data port having an output and configured to provide a signal corresponding to the data received from one of said first and second sources;

a memory configured to store a user-configurable prioritization schedule, said user-configurable prioritization schedule comprising first and second priority settings associated with said first and second sources, respectively; and

a selector configured to provide an alarm signal to the wearer while data from the first source is directed to the data output, when data from the second source is detected and when said second priority setting indicates greater priority than said first priority setting, wherein the selector is further configured to enable the wearer to manually select and direct data from a desired one of the first and second sources to the interface via the data port in response to the alarm signal.