I randomly saw this post show up on the sidebar and got nostalgic for the time I faced a similar problem, so I clicked. As I read the posts I felt some second-hand (or so I thought) cringe for the awkward teenager but also a sense of connection to the geeky kid making sure to mention to everyone how old he was, in some attempt to sound smart.
Then I realized, this
is me. I haven't participated in the forums here for years (decades?) and the chances of logging into the OP account are slim to none at this point (EDIT: MacRumors combined my accounts!). Yes, I am 35 now. I'm still a big vintage Mac nerd with more accumulated old systems than I know what to do with. 14 year old me would be proud of that, I think.
I can actually close the loop on the point of this thread! I did get my Duo to play MP3s back then, barely, using an app called
MpegDec if I recall correctly. It wasn't a very good experience, as you might imagine. Listening to a low bit rate MP3 through the dinky speaker, given that the Duo had no audio out, was not exactly fulfilling. But it was really about the thrill of the chase to me, anyway.