MP3 Discman flashing

Hi all. I’m sort of a noob here, so plz don’t be mad if I ask stupid questions and if i don’t post them where they should belong.

OK, I’ve got this mp3 discman (Aiwa XP-ZV77D). It’s great, but I’m not very happy with the mp3 format and it’s drawbacks. Is it (by any chance) possible to “flash” the discman in order to enable the Ogg Vorbis or AAC support?

Many thanks.