Hello!

I had a weird and wacky idea of using jukeboxes playing records as input blocks for your extruder.

I know that a jukebox has NBT tags like 'IsPlaying:1b' and 'RecordItem: {id: "minecraft:music_disc_stal", Count: 1b}' when it's playing a record, but I don't think that would be something that the extruder would (currently) recognize...correct?

If it's a semi-easy addition, I sure would love to have it (1.20.1 Forge)...but if not I understand :)

Thank you much!

Not sure about NBT data in blocks, but I can confirm that blocks themselves will work as we had no problem adding fluid substitute blocks for a Nether base.
You do have to make a second recipe though as a single one can't have both fluids and blocks as the inputs.