Add own random generator for rtp

    fprintf( stdout, "                      output configuration. ID1, ID2, ID3, ID4 specify the directivity pattern IDs used for\n" );

    fprintf( stdout, "                      ISMs 1,2,3 and 4 respectively. This options needs to be accompanied by a render_config file,\n" );

    fprintf( stdout, "                      otherwise a default directivity pattern is used.\n" );

    fprintf( stdout, "-aeid ID            : Acoustic environment ID (number > 0) or\n" );

    fprintf( stdout, "                      a sequence thereof in the format [ID1:duration1,ID2:duration2...]\n" );

    fprintf( stdout, "                      without braces and spaces, with ':' character separating ID from duration and ',' separating\n" );

    fprintf( stdout, "                      ID and duration pairs, where duration is specified in frames\n" );

    fprintf( stdout, "-aeid ID | File     : Acoustic environment ID (number > 0)\n" );

    fprintf( stdout, "                      alternatively, it can be a text file where each line contains \"ID duration\"\n" );

    fprintf( stdout, "                      for BINAURAL_ROOM_REVERB output configuration.\n" );

    fprintf( stdout, "-obj_edit File      : Object editing instructions file or NULL for built-in example\n" );

    fprintf( stdout, "-level level        : Complexity level, level = (1, 2, 3), will be defined after characterisation. \n" );