For a few albums the album art doesn't show at all or shows up low quality. I've got my album art in the album folder and also tried embedding it to the tracks with mp3tag. I dunno what's up album art works fine for 95% of my albums. Running v1.0 with Averia v1.10 tweaked config.
if you've used windows media player in the past, it's possible it's generated some thumbnail sized hidden .jpg files in your music folders. open explorer, goto organize>folder and search options, view tab, and untick the option "hide protected operating system files". now browse the affected folders.
Awesome! There's still the odd problem of some album art not showing up though.