Yo 2000 and counting:
[BTW=Hello Regebro--been a while but good to read your comments.]GH
I'm not sure about this but if you can import wave tracks on your Korg, there might be an avenue to try.
I have remastered many songs I did on 8 track tape. But, of course, I could not get the individual tracks from analog to digital, so here is what I did.
Re-record the mixed down stereo track into the digital box. Can't do much much tweaking; however, if the stereo track is dry, you can add some abience, light reverb. Also, you can cut some EQ like the low end or high end. You can't do a great deal with the EQ but I have remastered CDs, done at a studio, and by cutting the bass EQ, the vocals come to the front, where they belong.
I have imported to wave tracks with my SIAB, Yam 2816 which were sent to me by a friend who tweaked some of my recordings.
So, maybe the wave track import will work, maybe not--I'm not sure.
Happy Spring
Green Hornet