Even though OGG is open-source, files in this format are not well supported by mobile devices – iPhones and iPads, for starters. Your best solution here is to change the OGG files to a more accessible audio format. All you need is a suitable conversion app like the Movavi converter.
Download the Windows or Mac version of the software to painlessly convert your OGGs to MP3s (or MP3s to OGGs).
Run the file you’ve downloaded and complete the installation by following the on-screen instructions.
In the upper left-hand corner of the program window, click the Add Media button and then Add Audio. Locate and select the OGG file you want to convert to MP3 (or the MP3 file you want to turn into OGG). You can also add multiple files to do batch conversions.
Go to the Audio tab and open the MP3 preset group (or the OGG group if you want to convert a file from MP3 to OGG). Choose the appropriate preset for your device.
Hit the Folder icon to set the destination folder for your converted files, then click Convert. Your files will be converted in no time!