Where can you find the soundtrack of the 1974 MGM movie 'That's Entertainment'?

Where can you find the soundtrack of the 1974 MGM movie 'That's Entertainment'?
"That's Entertainment"(MGM 1974) - IMDb Lists The Soundtrack ... ...and links Amazon.com as the place to purchase DVD and VHS versions of the movie. If it's available there, many other sources probably have it too. IMDb says: "Please note that songs listed here (and in the movie credits) cannot always be found on CD soundtracks. Please check CD track details for confirmation.""Begin the Beguine"Words and Music by Cole PorterDanced by Eleanor Powell and Fred Astairefrom Broadway Melody of 1940 (1940)"The Babbitt and the Bromide"Words by Ira Gershwin, Music by George GershwinDanced by Gene Kelly and Fred Astairefrom Ziegfeld Follies (1946)"They Can't Take That Away from Me"Words by Ira Gershwin, Music by George GershwinPerformed by Fred AstaireDanced by Fred Astaire and Ginger Rogersfrom The Barkleys of Broadway (1949)"Let's Go Bavarian"Words by Harold Adamson, Music by Burton LaneDanced by Fred Astaire and Joan Crawfordfrom Dancing Lady (1933)"I Guess I'll Have to Change My Plan"Words by Howard Dietz, Music by Arthur SchwartzSung and danced by Fred Astaire and Jack Buchananfrom The Band Wagon (1953)"Shoes with Wings On"Words by Ira Gershwin, Music by Harry WarrenDanced by Fred Astairefrom The Barkleys of Broadway (1949)"You're All the World to Me"Words by Alan Jay Lerner, Music by Burton LaneSung and danced by Fred Astairefrom Royal Wedding (1951)"Dancing in the Dark"Words by Howard Dietz, Music by Arthur SchwartzDanced by Fred Astaire and Cyd Charissefrom The Band Wagon (1953)"I Wanna Be Loved By You"Words and Music by Harry Ruby, Bert Kalmar and Herbert StothartSung by Debbie Reynolds (dubbed by Helen Kane) with Carleton Carpenterfrom Three Little Words (1950)