check it out click on minidisc to the left, scroll down to MZ-R37SPPC
They're selling a different one at Circuit city, the MZ-R70PC for $250 (funny, it's only $230 directly from Sony). The circuit city ad says "Portable MiniDisc Player/Recorder with Remote. Includes interface cable to record MP3 flies and USB port for fast downloads." MZR70PCBLUE
My question is: how many mp3s can a minidisc hold and how fast does the USB transfer? The max rate of USB is 1.5 megabyte (12MBit) per second, which is roughly 8x in CD terms. If this thing holds close to 150 songs (like a mp3 cd) and it transfers at the max 12MBit and it allows the adding/deleting of specific songs (like portable SmartMedia/CF mp3 players) this could be a very hot deal, especially since adding "memory" to the thing would only require popping in a new minidisc.
Last I heard MiniDisc uses a compression scheme similar to mp3 so the MiniDiscs are really 650megs, they're like 200 or something, which would kill the deal for me.
The problem with portable mp3 cd players is that I don't think you can delete a single song from a CD-RW and add a new one, can you? I don't think so, that would require something like DirectCD or the likes. Without that feature it means to add a song to a mp3 cd-rw you have to erase the entire disc and write all the songs again, extremely time consuming.