Record book (5)
I believe this is a double definition.
'record' is the first definition.
(I've seen this before)
'book' is the second definition.
(album is a kind of book)
(Other definitions for album that I've seen before include "Book for, eg, stamps" , "Photograph/stamp book" , "series of tracks" , "Pictures" , "Book of blank pages for collectables, memorabilia etc." .)
(Another definition for high fidelity that I've seen is " producing little feedback perhaps".)