the 128 multimedia must be quite recent then. Multimedia does not have the encryption technology that audio has on sd, and it would seem reasonable to assume it will not have a great lifetime ahead as a format, because sd has far larger capacities available and coming on line. Unless it remains as a cheaper sibling of sd.
I thought about getting some just for technics or midi format if the prices were much less than sd, but in the long run losing the opportunity for digital audio is probably not worth it.
the lexar story is peculiar because here
http://www.memorysuppliers.com/san12secdigs.html they specifically talk of use for digital audio players and crytographic security for copyrighted data, which you would assume would make it ok for the card reader??
multimedia specs only mention uses for cameras, camcorders, phones and pdas, not digital music players.