mp3 not playing on songplayer

[amiga4001]

I've got a few mp3 songs which won't play with sonplayer 1.62.
Aminetradio and Mplayer play them nicely.
Is this a bug or not supported mp3 format in songplayer.
Morphos version btw.
Maybe I'll try it on my amiga4000 to see what it does with amigaamp and songplayer on there.

[amiga4001]

Where can I get an older version?
Like songplayer for it's simple handling.