Since you are looking for a , ensure the source is reputable to avoid malware. A "part-mixed" file usually implies the tracks are sequenced as they would be on a continuous DJ mix but provided as individual files or a large single-track rip with a .cue sheet.
If you're having trouble finding a clean digital archive, many of these "Classics" have been remastered for modern platforms.
Check platforms like Internet Archive (archive.org) . Many enthusiasts upload out-of-print anniversary compilations and radio mixes there for preservation.