20. A computer-readable storage medium holding computer-executable instructions that upon executing cause a computing device to: provide a plurality of entries containing data that are parsed into one or more parts, each entry associated with a metastructure containing metadata; attach a user-provided label to a user-selected part of a selected entry selected from the plurality of entries, the label being added to the metadata for the selected entry so that the label is cross-indexed with the selected entry, cross-indexed with the user-selected part and cross-indexed with other entries containing the label; alter the data contained in the selected entry to create an updated entry; cross-index the updated entry with the selected entry; update the metastructure associated with the selected entry to reflect relationship changes caused by the updated entry, the updating including a time the selected entry was altered, the metastructure maintaining a list of at least one relationship change between the selected entry and at least one other entry that shows an evolution of the selected entry over a time period that includes a time period before the updating; display the updated entry in response to a request for the selected entry; receive selections, via at least one displayed selector, of a time slice and a perspective to apply to the selected entry, the time slice corresponding to a period of time, the perspective being a date reference that controls a selection of labels displayed with the selected entry based on when the labels were associated with the selected entry; consult the metastructure associated with the selected entry to retrieve relationship changes for the selected entry during the selected time slice and perspective; and display a view of the selected entry governed by the time slice and perspective, the view displaying the data for the selected entry as it existed during the selected time slice and displaying labels for the selected entry based on the selected perspective.
20. A computer-readable storage medium holding computer-executable instructions that upon executing cause a computing device to: provide a plurality of entries containing data that are parsed into one or more parts, each entry associated with a metastructure containing metadata; attach a user-provided label to a user-selected part of a selected entry selected from the plurality of entries, the label being added to the metadata for the selected entry so that the label is cross-indexed with the selected entry, cross-indexed with the user-selected part and cross-indexed with other entries containing the label; alter the data contained in the selected entry to create an updated entry; cross-index the updated entry with the selected entry; update the metastructure associated with the selected entry to reflect relationship changes caused by the updated entry, the updating including a time the selected entry was altered, the metastructure maintaining a list of at least one relationship change between the selected entry and at least one other entry that shows an evolution of the selected entry over a time period that includes a time period before the updating; display the updated entry in response to a request for the selected entry; receive selections, via at least one displayed selector, of a time slice and a perspective to apply to the selected entry, the time slice corresponding to a period of time, the perspective being a date reference that controls a selection of labels displayed with the selected entry based on when the labels were associated with the selected entry; consult the metastructure associated with the selected entry to retrieve relationship changes for the selected entry during the selected time slice and perspective; and display a view of the selected entry governed by the time slice and perspective, the view displaying the data for the selected entry as it existed during the selected time slice and displaying labels for the selected entry based on the selected perspective. 24. The medium of claim 20 wherein the selected entry is audio data.