Keensta

hey i was wondering if the 1 gig hi-md (HMD1G) is compatible with and sony minidisc player. I have the mz-n610 model. I think its one of last years models (2003) and can only fit about 5 hours on a normal 80 min minidisc. I can't fit more than 3 or 4 cd's on my minidisc. If the HMD1G would be compatible with my minidisc player, that would be amazing. I'd really like to have access to 1 gig portable music. P.S is the HMD1G even out in stores?? I didn't see it last time i went to futureshop, but its on the sonystyle site. if anyone can answer my questions, or give me some suggestions, that would be greatly appreciated. Thanks