Developed in response to requests from national sound archives and libraries who need to integrate CEDAR Cambridge with media asset management (MAM) and other systems, the XML extension extends the Batch Processing system and allows the processing applied to each audio file to be specified by a software file called a batch token. This contains information such as the location of the source audio and its file name, what processes you would like to apply to the audio, where you would like the results deposited, and whether you would like a processing report generated. In addition, an XML log file can be created for each batch job.