I think the easiest way would be to hack one of these.
http://www.identiflyer.com/
It uses a small ROM, I think, in the cards, and the electrical
contacts are exposed on the back of the card. I haven't tried to
reverse engineer it, but I'm guessing it's a pretty simple compression
and interface, and all the other hardware is already there, even the
10 buttons. Of course, if your tracks are a lot longer than it is
made to play, that might be a show stopper.
-Wayne Padgett
--- In "Rich Peet" <> wrote:
>
> The easiest way to do this is to not think in terms of 10 tracks.
> Find the cheapest and smallest memory solid state mp3 player money can
> buy and buy 10 of them. Have them running all the time and use a wafer
> switch to select the headphone out. clamp the play button pushed so
> that it will play when it is powered up and replace the battery with a
> power supply wall wart.
>
> Rich Peet
>
> > --- In Gianni Pavan <gpavan@>
> > wrote:
> > >
> > > Hi all,
> > > for an educational project (kids eager than 10 years) I need
> > some
> > > (10 or less) MP3 players with say 10 buttons to play 10 stored
> > tracks
> > > of bird songs or other nature sounds.
> > >
> > > To date I only found this product
> > > http://www.mp3projects.com/mini_module-e.htm#bestellungen that
> > > require some work to design and assemble what I need.
> > >
> > > Any hint or any idea for a better/easier solution ?
> > > Maybe there is something for hunters, with stored calls to be
> > played
> > > by pressing a button...
> > >
> > > Looking forward to your input,
> > > Gianni
> > > --------------------------------------------------------------------
> > -----------------------------------
> > > Gianni Pavan
> > > Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
> > > Universita' degli Studi di Pavia, Via Taramelli 24, 27100 PAVIA,
> > ITALIA
> > > Phone +39-0382-987874 Fax +39-02-700-32921
> > > Email gianni.pavan@
> > > Web http://www.unipv.it/cibra
> > > --------------------------------------------------------------------
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