Can I interchange the memory from an Old PowerMac 7500/100 into a PowerMac G3 Beige Mini Tower?
Audible has YML for 95 cents an episode, 1-month subs for $3.95 and annual subs for $19.95 and you can get the first 14 days of the AudibleListener® Platinum plan free, which includes two downloads.

3rd Light Digital Media
Not unless you're Mcgyver or Doctor Who.
According to Mactracker.app ( http://www.mactracker.ca/ )
And if I have the models selected correctly:
7500 (PowerPC 601) =ed 8-168 Pin DIMMs, 70ns, Interleaving support-yes
Power Macintosh G3 (Minitower) "Gossamer" =ed 3-PC66 3.3v, unbuffered, 8-byte, x64 non-parity 168-pin SDRAM,
DIMM vs. SDRAM?