EXHIBIT 21.1 SUBSIDIARIES OF REGISTRANT Name: Vidipax, Inc. Jurisdiction of incorporation Or organization: New York Other Business Names: N/A - -------------------------------------------------------------------------------- Name: Loudeye Technologies UK Ltd. Jurisdiction of incorporation Or organization: United Kingdom Other Business Names: N/A - -------------------------------------------------------------------------------- Name: Activate.net Corporation Jurisdiction of incorporation Or organization: Delaware Other Business Names: N/A - -------------------------------------------------------------------------------- Name: Loudeye Sample Services, Inc. Jurisdiction of incorporation Or organization: Delaware Other Business Names: N/A - -------------------------------------------------------------------------------- Name: Monstar Labs Limited Jurisdiction of incorporation Or organization: New Zealand Other Business Names: N/A - -------------------------------------------------------------------------------- Name: Addition Systems, Inc. Jurisdiction of incorporation Or organization: Delaware Other Business Names: N/A