Troublesome parents, we went on to say that the use of third-party tools is undoubtedly much simpler, download the itools Mac version. After installation, search the AV Center for the ringtone you need, and then sync to the iphone in my device, and then set your downloaded song to ringtones in the iphone settings and use this software without escaping.
Open itunes, select "File"-"Add Files to Repository" on the menu bar
Select the song you want to make a ringtone, click Open
The song will appear in the "Music" of the database.
Right-click the song and select "Show Profile"
Select option to fill in "Start Time" and "Stop Time" (within 40 seconds),-"OK"
Then right click on the song and select "Create ACC version"
file with same filename, but within 40 seconds
Right-click the newly created song, select "Show in Windows Explorer", change the "M4A" format to "m4r" and select "Yes" in the pop-up window.
PS: If you don't see "m4a", after you select Show in Windows Explorer, in the menu bar, select Folder Options in Tools, select View, and in the advanced settings, remove the check box before "Hide extensions for known files", and then "OK".
Check: Find "preferences" on the itunes menu bar "edit" open
In the "common"-"source" in front of the "ring" tick, and then "OK"
You can see the ringtone in the repository.
Turn on "ringtones" to see if your files have been turned into ringtones
and open the iphone in the device.
Select "Ringtones", tick the "Sync ringtones" item, select "All Ringtones," or "Select Ringtones," and select "Sync" to
After the "ringtone" is successfully synchronized, the ringtone will appear on the phone's "settings"-"sound"-"ringtones"-"custom" inside
To use this ringtone, just select it. The custom option is above the standard option
Some ringtones need to be converted, you can use the format conversion master this software to modify your favorite songs file types, very convenient, so you can do the next step of the operation