Probably the final amiga release of mpeg3play.
Stephane's mus/play/mpega.lha is the best mp3 player for the amiga.
mpeg3play0.9.6 source needs no changes for an amiga compile. (with ADE)

The mp3 encoder is no longer in this archive. See /mus/misc/mp3enc.lha.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 2458    5440  45.2% -lh5- d544 Apr 24  1997 mp3/amigaMP3.guide
[generic]                  883    1683  52.5% -lh5- 764e Apr  5  1997 mp3/docs/mpeg3play.1
[generic]                  666    1281  52.0% -lh5- e1d0 Sep  8  1995 mp3/docs/readme.Fraunhofer
[generic]                 4925   11147  44.2% -lh5- 080e Jul 14  1995 mp3/docs/readme.ISO_1994
[generic]                 1485    4300  34.5% -lh5- 7c3d Feb 14  1996 mp3/docs/readme.ISO_1996
[generic]                 4634   12086  38.3% -lh5- 3d05 Apr  6  1997 mp3/docs/readme.mpeg3play
[generic]                  308     495  62.2% -lh5- dfe2 Apr 24  1997 mp3/mp3.readme
[generic]                47159  115772  40.7% -lh5- edab Apr 22  1997 mp3/mpeg3play.000
[generic]                40377   95008  42.5% -lh5- 38bc Apr 22  1997 mp3/mpeg3play.020881
[generic]                40814   96080  42.5% -lh5- f8ff Apr 22  1997 mp3/mpeg3play.040881
[generic]                84033   84033 100.0% -lh0- 8c90 Apr 11  1997 mp3/source/mpeg3play-0.9.6-src.tar.gz
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        11 files  227742  427325  53.3%            Apr 24  1997