This player’s been out for quite some time and most certainly won’t be found anywhere to be bought as new. Still, Jens Arnold’s been working hard on this port lately and just minutes ago he mentioned that he got sound working on it – and the build table subsequently has all three kinds of the M3 build added to it.
The M3 is roughly an M5 but without any LCD on the main unit, there’s only that one on the LCD! And of course the M5 was almost an X5 but with a greyscale LCD… So it is another one of them Coldfire 5249 based targets. The LCD on the remote is 128×96 2bit greyscale,
The M3 comes with 20 or 40GB harddisk and there’s an M3L around with a larger capacity battery
How many Rockbox ports are there now? It’s hard to tell as it really depends on what level of maturity and how much functionality you require before you count it as an actual port, but the configure script in our source tree has 38 different ones mentioned. I believe some of them are not more than embryos, but there are also other initial efforts not yet added to this script.