Abstract: A method of determining the audio level of a network partner media player, wherein, when media playing on a terminal media player running on a terminal originates from an external media source, the method comprises obtaining activity information from the terminal, obtaining activity information from the terminal media player, obtaining activity information from an external source media player associated with the external media source, and analysing the activity information from the terminal, the activity information from the terminal media player, the activity information from the external media source media player, whereby the audio level of the network partner media player is determined.

Abstract: A method of quantifying the effectiveness of delivery of digital media content comprises identifying a group of instances of delivery of digital media content, calculating a plurality of metrics for the group, each metric indicative of a different aspect of effective delivery of the digital media content, and combining the calculated metrics into a single indicator of the effectiveness of the delivery of digital media content for the group. The group of instances can represent the delivery of digital media content by a particular supplier or a particular service of a particular supplier of digital media distribution services over a period of time. The metrics can be indicative of the proportion of the instances that were visible or audible to a viewer of the digital media content.