Mostly recorded, and readily available (2,3)
I believe the answer is:
on tap
'readily available' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for on tap that I've seen before include "Where to find a washer" , "Always available" , "readily accessible" , "Ready for immediate use" , "handy" .)