It depends on the reason why you&#x27;re buying the track. You can find all the great electronic music on iTunes, but the sound quality isn&#x27;t as good as on Juno or Beatport. DJs shop at stores other than iTunes because the sound quality is a consistent 320 kbps (or WAV) and a track won&#x27;t sound &quot;bad&quot; just because it&#x27;s a slightly lower quality played in between two higher quality tracks.<p>You can tell if you play them next to each other, on an expensive club sound system. Other than that, you probably can&#x27;t.