Download link not working on iPad, fine everywhere else

I’m using this player with html5 and downloads enabled. Everything is good in browsers on my PC in Firefox and IE10; both audio playing and downloading the mp3 tracks works great. On my iPad, the playing of the audio works great, however the download gives me a warning page with the following:

filesize() [function.filesize]: stat failed for https://www.brainworksglobal.com/new/wp-content/peekaboo/audio/sharpen_your_saw_for_greater_roi.mp3 in fullserverpath/direct_download.php on line 11

(it has the full server path, but I just didn’t type it out here)

Then after that warning is a second one that says Cannot modify header information – headers already sent by (output started at fullserverpath/direct_download.php on line 11

Then a whole long piece of gibberish text.

I can’t figure it out since the downloads do work on my main computer. I also have the ogg files on the server, with the mp3s.

I’m using this shortcode:

[ca_audio url_mp3=”https://www.brainworksglobal.com/new/wp-content/themes/peekaboo/audio/sharpen_your_saw_for_greater_roi_training.mp3″ url_ogg=”https://www.brainworksglobal.com/new/wp-content/themes/peekaboo/audio/sharpen_your_saw_for_greater_roi_training.mp3″ css_class=”codeart-google-mp3-player” autoplay=”false” download=”true” html5=”true”]

Any ideas would be appreciated, thanks!

https://www.ads-software.com/plugins/google-mp3-audio-player/