http://homepage3.nifty.com/Nekomimi/macplay.tar.gz
There is also available the Monkey's Audio (APE) compressor/decompressor at hobbes:
http://hobbes.nmsu.edu/cgi-bin/h-search?key=mac-3.99-u4-b3-os2bin.zip
"Monkey's Audio is a lossless digital audio compression format.
Project Web Site:
http://sourceforge.net/projects/mac-port/"
Source: OS2.jp