I have an MP3 file uploader. I want to add an additional audio track to the file upon upload via PHP. Is that possible?
I say "Yes, it's possible".
The following seems to make it seem almost trivial: " How to Merge / Concatenate MP3s with PHP "
(based on comments)
It's not possible, well not directly possible. Not with just PHP.
With PHP you could break up a Mp3 and insert your own little snippet into pauses, but it probably won't sound very good, and if I am thinking correctly will result in lowered audio quality.
To really achieve what you want you would need something inbetween to process the Mp3 files. More than likely it would be a Unix shell script attached to some program or library that can do this, executed by PHP.
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