With mp3tag 2.54, I noticed that after adding artwork jpg 500x500pixels to APE tracks, only the first 2 seconds of the tracks would play (in any player). At first I thoiught I had downloaded faulty files - but trial and error showed that addingh artwork with mp3tag was the problem. Interestingly - if I remove the artwork using mp3tag, the files play normally again! I am using the default mp3tag settings.
I should say that I think mp3tag is a wonderful piece of software - thank you for supplying it for free. regards