Useful information to include:

• Minecraft version: 1.12.2
• CC: Tweaked version: SC (3.29)
• Detailed reproduction steps: sometimes I can spot a bug pretty easily, but often it's much more obscure. The more information I have to help reproduce it, the quicker it'll get fixed
  1. Get a MC parrot and tame it.
  2. Get a disk drive
  3. Get any "positive" Music Disc (things like cat, etc)
  4. Put disc in Disk Drive
  5. Get a computer
  6. Play the disc.
  7. Profit.

Parrots do an explicit check for jukeboxes within the area - it's doesn't provide any way to have other music sources. I believe any modded sound system has the same issue.

Sadly this one is impossible to fix without a core mod, and it doesn't seem worth the PR to forge.