ReplayGain
The replay gain data of a song.
Opensubsonic:
{
    "trackGain": 0.1,
    "albumGain": 1.1,
    "trackPeak": 9.2,
    "albumPeak": 0,
    "baseGain": 0,
    "fallbackGain": -8.1
}Does not exist.| Field | Type | Req. | OpenS. | Details | 
|---|---|---|---|---|
trackGain | number | No | Yes | The track replay gain value. (In Db) | 
albumGain | number | No | Yes | The album replay gain value. (In Db) | 
trackPeak | number | No | Yes | The track peak value. (Must be positive) | 
albumPeak | number | No | Yes | The album peak value. (Must be positive) | 
baseGain | number | No | Yes | The base gain value. (In Db) (Ogg Opus Output Gain for example) | 
fallbackGain | number | No | Yes | An optional fallback gain that clients should apply when the corresponding gain value is missing. (Can be computed from the tracks or exposed as an user setting.) | 
Note: If the data is not present the field must be omitted in the answer. (But the replayGain field on Child must always be present)