dunno, eBay? Perhaps Padial hardware (never seen/used it myself tho), but atm I can't seem to find a Padial website. The one in our links section is a dead link..

I bought a GDOS slot expander from its developer a year ago or so... and I have not tested it yet due to long work hours and other domestic reasons. The PCB is mounted on a VHS case and the 'cartridge' to connect it to the MSX was a simply audio cassette jewel case , not as beautiful as Sunrise cartridges cases but it's the only one I found and it was not so expensive (45 € or so if I remind well). Maybe this guy can make more, it was no problem then to make one for me. If anyone is interested I'll try to find his contact info, sure I have his email adress somewhere.

Question: How do I order a MP3 cartridge? Manuel said Sunrise sells the cartridge, but there's no mention to it in Sunrise page (am I searching in the right place? the web doesn't seem to have been updated from some years ago). I've read something in this thread about different options on this cartridge and different prices too. Can anyone post updated info about how to get one of this cartridges? Thanks a lot.

Try to send Sunrise an e-mail: sunhisan@euronet.nl.

I don't understand why slotexpanders are so hard to obtain these days/years. With all the new expansions for our beloved system, the demand for slotexpanders must be enormous. Maybe Sunrise (or another party) can produce some slotexpanders. I think that will boost the sales of other expansions such as the GFX9000 and MSX MP3 cartridge as well.

Thanks D-Tail