The most common and most likely answer to this crossword clue is the 7 letter word PODCAST
I've seen this crossword clue in The Times
P
O
D
C
A
S
T
More clues leading to the result PODCAST
- Online recording of old Washington in bygone days
- School players downloaded audio file
- Nothing current in old transmission
- Item on website about current article or internet feature
- Saucy postcard, not right to publish to online audience
- Case to select for audio file
- Spooner’s fake history published on the internet
- School actors downloaded recording
- Most of data having gone west, drop digital recording
- Spooner’s fish gone — work on the net!
Buddy explains!

The straight part
We know that "downloaded audio file" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case downloaded audio file = podcast.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PODCAST mean?
PODCAST noun- An audio programme produced on a regular basis, delivered over the Internet in a compressed digital format and designed for playback on computers or portable digital audio players, such as the iPod.
- To deliver (an audio programme) over the internet on a regular basis.