A method of processing audio data, the method comprising: receiving audio data (7, 201A-205A) corresponding to a recording of at least one conference involving a plurality of conference participants, the audio data including at least one of: (a) conference participant speech data from multiple endpoints (1, 206-208), recorded separately or (b) conference participant speech data from a single endpoint corresponding to multiple conference participants and including spatial information for each conference participant of the multiple conference participants; and determining search results of a search of the audio data based on one or more search parameters, the search results corresponding to at least two instances of conference participant speech in the audio data, the at least two instances of conference participant speech including at least a first instance of speech uttered by a first conference participant and at least a second instance of speech uttered by a second conference participant; CHARACTERIZED IN THAT the method further comprises: rendering the instances of conference participant speech, to which the search results correspond, to at least two different virtual conference participant positions of a virtual acoustic space, such that the first instance of speech is rendered to a first virtual conference participant position and the second instance of speech is rendered to a second virtual conference participant position; and scheduling at least some of of said instances of conference participant speech for simultaneous playback, to produce playback audio data, wherein the scheduling involves at least one of: scheduling at least some of saidinstances of conference participant speech that did not previously overlap in time to be played back overlapped in time, or scheduling at least some of said instances of conference participant speech that were previously overlapped in time to be played back further overlapped in time. receiving audio data (7, 201A-205A) corresponding to a recording of at least one conference involving a plurality of conference participants, the audio data including at least one of: (a) conference participant speech data from multiple endpoints (1, 206-208), recorded separately or (b) conference participant speech data from a single endpoint corresponding to multiple conference participants and including spatial information for each conference participant of the multiple conference participants; and determining search results of a search of the audio data based on one or more search parameters, the search results corresponding to at least two instances of conference participant speech in the audio data, the at least two instances of conference participant speech including at least a first instance of speech uttered by a first conference participant and at least a second instance of speech uttered by a second conference participant; CHARACTERIZED IN THAT the method further comprises: rendering the instances of conference participant speech, to which the search results correspond, to at least two different virtual conference participant positions of a virtual acoustic space, such that the first instance of speech is rendered to a first virtual conference participant position and the second instance of speech is rendered to a second virtual conference participant position; and scheduling at least some of of said instances of conference participant speech for simultaneous playback, to produce playback audio data, wherein the scheduling involves at least one of: scheduling at least some of saidinstances of conference participant speech that did not previously overlap in time to be played back overlapped in time, or scheduling at least some of said instances of conference participant speech that were previously overlapped in time to be played back further overlapped in time. rendering the instances of conference participant speech, to which the search results correspond, to at least two different virtual conference participant positions of a virtual acoustic space, such that the first instance of speech is rendered to a first virtual conference participant position and the second instance of speech is rendered to a second virtual conference participant position; and scheduling at least some of of said instances of conference participant speech for simultaneous playback, to produce playback audio data, wherein the scheduling involves at least one of: scheduling at least some of saidinstances of conference participant speech that did not previously overlap in time to be played back overlapped in time, or scheduling at least some of said instances of conference participant speech that were previously overlapped in time to be played back further overlapped in time.