Buy the CD. Rip it to FLAC. Compress it into your own personal RAR for your phone. That way, you honor the legend while enjoying the convenience. Because as Nagabuchi himself sang in "Hana": "People only know the true value of flowers when they wither." Don’t let his music wither in the graveyard of corrupted files.
Is the search for worth it?
4 CDs, featuring 24-bit remastering from the original masters.