This is NOT a suitable recommendation for forensic purposes, because it
entails mucking with the cassette.
But, I've extracted terrific results by transplanting such tapes into
Norelco (standard) shells & then playing them on much better quality heads
& playback circuits.
It seems feasible that an excellent machinist could come up with an adaptor
that'd non destructively reroute a micro's tape out of its shell (and back
into) so that it could be readily played on a desireable machine, such as a
Dragon or 122MKIII