Art work madness

Hi folks

Sorry for the doublepost but I need help:

I'm using latest Davaar, Twonky App 7.2.8 on my QNap, Kinsky on my PC, Mac, iPhone 5s, and the artwork looks so bad! What can I do to solve this problem? With Chorus DS all worked fine, till Chorus DS made searious problems.

Thanks. Cris