Hello there,
I’m not sure, it’s been a while since I built this. Also, I’ve been away from WordPress development lately.
If you happen to find a solution I’d be happy to implement it in the plugin.
Best regards
No worries – I fixed the problem in a round-about-way. I needed to attach the audio files rather than embed URLs to my files. Unfortunately WordPress only allows a 2mb upload into the media library. So, I installed the plugin ‘Add From Server’. This enabled me to FTP my large audio files to my site, add them to my media library using the Add to server option provided by the other plugin and then use your plugin to offer a zipped download of my audio files. Works a treat. If however I missed a trick and you know of a way I could have used your plugin without my workaround I would be very interested to hear. Many thanks.
The 2MB limit is due your server configuration and not WordPress itself.
If you have access to install plugin you might have permissions to edit the upload file size limit.
Here are different methods. Give them a try: http://www.wpbeginner.com/wp-tutorials/how-to-increase-the-maximum-file-upload-size-in-wordpress/
Cheers.