Right Click > Properties - Will be displayed in the window on the right hand side
You could also code it into your playlist (or status)
My RG Playlist config:
$rgb(0,128,255)
$if(%__replaygain_track_gain%,●,-)
$rgb(0,0,0)
$if(%__replaygain_album_gain%,●,-)
My status bar config:
//**************************************
// Replay Gain
//**************************************
//track gain
$puts(rpg,
$if(%__replaygain_track_gain%,
$get(spacer)
' TGain:'$cut(%__replaygain_track_gain%,5)'dB'
$if(%__replaygain_album_gain%,
$get(spacer)' AGain:'$cut(%__replaygain_album_gain%,5)'dB'
)
)
)
[i]
//**************************************
// progress %
// (checking total because of streaming)
//**************************************
$puts(progress_%,
$if(%_time_total_seconds%,
' ='$pad_right($num($muldiv(%_time_elapsed_seconds%,100,%_time_total_seconds%),3),4)'%'
)
)
$codec()
$if($or($stricmp($codec(),FLAC),
$stricmp($codec(),Monkey''s Audio),
$stricmp($codec(),Shorten)),
' ('$muldiv(%__bitrate%,100,1411%)'%)',
$if3(' ('%__bitrate_dynamic% kbps')',' ('%__bitrate% kbps')',)) [%__samplerate%Hz]' '
$channels()
$char(9)
$if(%_time_total%,[%_time_elapsed%]' / '[%_time_total%],[%_time_elapsed%])
$get(progress_%)
$char(9)[/i]
$get(rpg)
The 0.00Db in your status bar is the current volume - this does not change with Replay Gain.
Hope that helps. I didn't code the status bar, it was the iTunes "skin" for Columns UI - I forget who coded that.
Steve