I have a PowerMac and I can't get the sound to work Solution:
Download this program. It will update your Lemmings installation so the sound will (hopefully) work.
Other Technical Problems?
Are you experienced with the Macintosh? Be The LemNet Chronicles' Macintosh technical supporter. It will become your job to answer technical questions about running Lemmings games on the Macintosh. If you're interested, please email me. You will get FULLY credited for your work.