1. A method for use in identifying a segment of audio and/or video information, comprising obtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment, searching fingerprints in a database of fingerprints for a potential match for each such query fingerprint, obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, wherein the confidence level is a function of the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint, and combining the results of searching for potential matches either to identify said segment of audio and/or video information or to conclude that said segment does not belong to the database, wherein each potential match result is weighted by a respective confidence level.