Avoid sites claiming “Avenged-Sevenfold--Discography--iTunes-Plus-AAC-M4A--490trtr--” as a single archive. These often contain:

The search string “Avenged-Sevenfold--Discography--iTunes-Plus-AAC-M4A--490trtr-” reveals a fan’s desire for completeness, quality, and organization. But the true way to honor a band as hardworking as Avenged Sevenfold—a group that survived tragedy, reinvented themselves, and continues to push metal’s boundaries—is to acquire their music legally. Whether you buy each album on iTunes, subscribe to Apple Music, or rip your own CDs, you’ll have a pristine M4A collection that does justice to “Bat Country,” “The Stage,” and every breathtaking solo in between.

: "iTunes Plus" signifies the removal of Digital Rights Management, allowing the files to be played on any device that supports the M4A format, not just Apple products. The Significance of the "490trtr" Tag

If you have a legit iTunes purchase or CD rips converted to M4A: