replaygain_track_gain = -9.01 dBreplaygain_track_peak = 1.092741replaygain_album_gain = -9.58 dBreplaygain_album_peak = 1.220819
Data FormatThe maximum peak amplitude (a single value) should be stored as a 32-bit floating point number, where 1=digital full scale.Uncompressed FilesSimply store the maximum absolute sample value held in the file (on any channel). The single sample value should be converted to a 32-bit float, such that digital full scale is equivalent to a value of 1.Compressed filesCompressed audio does not exist as a waveform until it is decoded. Unfortunately, psychoacoustic coding of a heavily limited file can lead to sample values larger than digital full scale upon decoding. However, it is likely that such values will be brought back within range after scaling by the replay level. Even so, it is necessary to store the peak value of a compressed file as a 32-bit floating-point representation, where +/-1 represent digital full scale, and values outside this range would usually clip.
AFAIK, ReplayGain is good for clipping introduces by the encoder. If the source (CD for example) was already clipped, lowering the volume will not get rid of the clipping, but it will be less audible.