Abstract: A method of determining whether a program corresponds to a new version of an application is disclosed. A key value corresponding to the program is determined. A program descriptor corresponding to the program is determined. The program descriptor comprises fields extracted from a program file associated with the program. One or more versions of an application having the same key value are identified. A program descriptor corresponding to each of the one or more versions of the application is identified. The program descriptor corresponding to each of the one or more versions of the application comprises fields extracted from a program file associated with the version of the application. The determination of whether the program corresponds to a new version of the identified application is based on comparing the program descriptor corresponding to the program against the program descriptors corresponding to the one or more versions of the identified application.

Abstract: A method for watermarking an audio signal may include embedding in the audio signal a watermark that includes a plurality of mute intervals of a predetermined characteristics. A method for audience measuring may include, for each media content item of a multi-content media broadcast, embedding a unique watermark that includes a plurality of mute intervals of a predetermined characteristics in an audio signal of that media content item. The method may further include, at a media player that plays a media content item from multi-content media broadcast, acquiring the audio signal of the media content item being played. The method may further include detecting the embedded watermark in that audio signal and comparing the detected embedded watermark with the unique watermark of each of the media content items of the multi-content media broadcast to determine which media content item of the multi-content media broadcast was played by the media player.

Abstract: Methods and systems for providing centralized video accounts where videos are received over a communication network from video sources associated with a plurality of accounts and the videos or processed versions thereof are transmitted over a communication network to corresponding users of the plurality of accounts. In another aspect of the invention a new communication protocol for network components is disclosed.