Audio data processor, comprising: a receiver interface for receiving encoded audio data and metadata related to the encoded audio data; a metadata parser for parsing the metadata to determine an audio data manipulation possibility; an interaction interface for receiving an interaction input and for generating, from the interaction input, interaction control data related to the audio data manipulation possibility, wherein the interaction interface is configured to present, to a user, the audio data manipulation possibility derived from the metadata by the metadata parser, and to receive, from the user, the interaction input on a specific data manipulation of the data manipulation possibility; and a data stream generator for obtaining the interaction control data and the encoded audio data and the metadata and for generating an encoded output data stream, the encoded output data stream comprising the encoded audio data, the metadata and the interaction control data, wherein the data stream generator is configured to process an input data stream comprising the encoded audio data and the metadata received by the receiver interface without decoding the encoded audio data for generating the encoded output data stream, or to copy the encoded audio data and at least a portion of the metadata without changes in the encoded output data stream, to embed the interaction control data as an additional data portion in the output data stream, and to forward the encoded output data stream comprising the encoded audio data, the metadata and the interaction control data to an external decoder for decoding the encoded output data stream. a receiver interface for receiving encoded audio data and metadata related to the encoded audio data; a metadata parser for parsing the metadata to determine an audio data manipulation possibility; an interaction interface for receiving an interaction input and for generating, from the interaction input, interaction control data related to the audio data manipulation possibility, wherein the interaction interface is configured to present, to a user, the audio data manipulation possibility derived from the metadata by the metadata parser, and to receive, from the user, the interaction input on a specific data manipulation of the data manipulation possibility; and a data stream generator for obtaining the interaction control data and the encoded audio data and the metadata and for generating an encoded output data stream, the encoded output data stream comprising the encoded audio data, the metadata and the interaction control data, wherein the data stream generator is configured to process an input data stream comprising the encoded audio data and the metadata received by the receiver interface without decoding the encoded audio data for generating the encoded output data stream, or to copy the encoded audio data and at least a portion of the metadata without changes in the encoded output data stream, to embed the interaction control data as an additional data portion in the output data stream, and to forward the encoded output data stream comprising the encoded audio data, the metadata and the interaction control data to an external decoder for decoding the encoded output data stream.