I want to share my "discovery".
All my Apple lossless files created with iTunes from a CD, when it was brought to the AK120, the covers don't appear on. I put the cover on the entire album (and so appeared on all tracks). The cover appears on iTunes but also on some players Mac (Audirvana, Vox, etc.) without problems. But not on AK120.
I've tried to include the cover (taking it from a JPG file) one track at a time: so the cover is displayed smoothly on the AK120.
Do you have similar experiences?
I had the same problem as well...what I do now is that I rip my CDs with itunes and use iriver's software to put album covers on the tracks. Just have to make sure the resolution of the album cover files are lower than 500x500.