I thought this would be an interesting use of speex, as these files are 1/4 the size. It is a shame the mp3s that I sourced were of really poor quality, however the speex files are understandable...
So without further delay, here is the speex files. If you have a media player associated with spx files, it should magically work.
Tape 1, side 1
Tape 1, side 2
Tape 2, side 1
Tape 2, side 2
Tape 3, side 1
Tape 3, side 2
Tape 4, side 1
Tape 4, side 2