Soundfont-based Albums

Cave Story Music in LittleBigPlanet
by SevenIsaCannibal

The full Cave Story soundtrack and then some ported to LittleBigPlanet.
Tracks transcribed: 45
Visit the level's page on lbp.me  

MOTHER 3 + CAVE STORY
by totally-not-kase377

Cave Story's soundtrack in the Mother 3 soundfont.
Number of tracks: 44
Download the remixes here  

Cave Story 8-bit OST Remake
by TheVinylCheese

Cave Story's soundtrack rewritten in Famitracker.
Number of tracks: 37
Visit the site  

Cave Story - Genesis/FM arrangements
by Jass Fusion

Cave Story tracks written for the Sega Genesis (Mega Drive).
Number of tracks: 17
Visit the site  

Cave Story
by Jmankman

Cave Story tracks written for the NES Konami VRC6 expansion chip.
Number of tracks: 4
Visit the site  

Cave Story (2A03) Cover
by Player 3

2A03 is likely a reference to the Ricoh 2A03 microprocessor. Yep, it's another NES remake effort.
Number of tracks: 2
Visit the site  

Cave Story SNES Soundtrack Mod
by CaveStoryFan244

Cave Story written for the spc700.
Number of tracks: 45
Visit the site  

Cave Story
by tEFFx

Cave Story written for various old sound engines.
Number of tracks: 4
Visit the site