"Save Music" is the 22nd track of original soundtrack and has a duration of 10 seconds.
"Inn" is an arrangement of the Final Fantasy "Save Music", and is the 25th track of the original soundtrack, having a duration of 10 seconds.
For the 3D version, the track is called "Rest at the Inn". It is the 36th track in the original soundtrack that plays for 10 seconds.
For the 3D version, the "Good Night" track is called "Inn". It is inserted in the last track in the original soundtrack, called "Jingle (Inn/Wonder/Theme of Sorrow 2/Fanfare 1/Fanfare 2)".
The track "Good Night" is the resting track, and can be played from the Music Player in the Advance release, and on the Config menu in the Android/iOS release.
"Good Night" (おやすみ, Oyasumi?) plays whenever the player rests. It is the 26th track on disc 1 of the Final Fantasy X: Original Soundtrack. An arranged version appears on the Final Fantasy X HD Remaster Original Soundtrack.
"Nap" (仮眠, Kamin?) is the track that plays whenever the player takes a rest at the Skyferry, since the game does not feature Inns. It is the fourth track on disc 4 of the Final Fantasy XII: Original Soundtrack.
"Innkeeper" (宿屋, Yadoya?) plays whenever Lightning rests at an inn. It is the 25th track on the Original Soundtrack PLUS. "Innkeeper" is the longest "sleep" track in the series lasting for around fifteen seconds.
"In the Arms of Althyk" (時神に誘われて, Tokigami ni Sasowarete?), a remix of the "Victory Fanfare", plays when the player rests inside an inn room. It is the 94th track on the official soundtrack, Before Meteor: Final Fantasy XIV Original Soundtrack.