Looks like this should be pretty sweet, and if I'm deciphering the Babelfish translation correctly, it features arranged tracks as well.:D
"It selects popularity tune and vocal tune even in former MG sound track,
Also new sound recording JAZZ, Rock and the classic and each artist including the respect to the MG series, it covers!
From MG1 best selection sound source collection from in the many サントラ sound source to MPO of up-to-date work.
New sound recording cover of MG popularity music simultaneous recording to one CD
Participation artist: Norihiko Hibino and spring Mutuhiko, it is clear mound Sinya."
EDIT: A box set of BGM with a bonus arranged disc would be even sweeter, though.