I just purchased a Sansa Clip Zip yesterday to playback my new FLAC files and the track info displayed on the Clip Zip does not show the Replay Gain value. The Clip Zip manual says it should be present in track info on the player if the Replay Gain value was embedded in the file and able to be used by the player. I am wondering what standard or version of Replay Gain dbpoweramp uses in DSP effects?

DSP effect I have setup in dbpoweramp:
1) Replay Gain (Calculate Track Gain, Calculate Album Gain, Album Identified with Album ID Tag)
3) Move Destination File if Error