The DBWebSound control is connected to a DBWebDataSource pointing to the DataSet filled by the BdpDataAdapter. The BdpDataAdapter executes the query 'SELECT * FROM SOUNDS', and fills DataSet1 with the Results. DBWDataSource has its DataSource property set to DataSet1. The TableName property of DBWebSound is set to SOUNDS, and the ColumnName is set to LOCATION.
This application also demonstrates a new use of DBWebListBox. In D8, DBWebListBox required that the TableName be the target table for the select ListBox item, while the LookupTableName be the source table for this ListBox data. In D9, if you make the TableName and the LookupTableName the same property, it is possible to simply use it for the purpose of selecting a particular row. The Row selection code is the WebForms's FormLoad event: