How do you add Custom ringtones to iPhone 5 in iOS 6 on Mac OS 10.6.8

This guide works on Windows OS and iPhone5. The procedure may differ in Apple OS or Linux.

Softwares required/recommended: iTunes, Cockos REAPER or Audacity, Foobar2000, Nero AAC codec (all with latest versions and all for free).

Step 1:

- Trim your song in REAPER or Audacity under 30 seconds

- Ringtone longer than 30 seconds cannot be uploaded to your mobile device by iTunes.

- Render the trimmed song as a new .wav file.

- The ringtone is highly recommended to be downsampled to mono if it's stereo in order to reduce the file size to half.

Step 2:

- Drag the rendered wave file to Foobar2000 and right-click the song in the playlist to open the menu.

- Click "Convert" - "...". Click "output format" and choose "AAC (Nero)".

- You can adjust the quality as you wish by clicking "Edit". "VBR (recommended)" mode and 150 kbps quality usually suffice.

- You may also modify the "Destination" to "source track folder" so you can find the converted file easier next time.

- When everything is OK, click "Convert" to start the conversion.

- If this is your first time to use Foobar2000 to convert file to AAC format, Foobar2000 may ask for encoding exe file. Locate the "neroAacEnc(dot)exe" you have downloaded from Nero(dot)com.

- All these conversion steps done in Foobar2000 are stored for quick conversion next time by choosing the "[last use]" option.

Step 3:

- Rename the extension of the converted file from ".mp4" (or ".m4a" for whatever reason) to ".m4r".

- Ignore the system warning for modifying the extension.

Step 4:

- Open iTunes and drag the m4r file to "Library" - "Tones". You may need to expand the tones folder in "Edit" - "Perferences..." in "Source" list before you can use it.

- Connect your iPod/iPhone/iPad to your computer if you haven't done it yet, make sure that iTunes has recognized your device.

- Click your device's name on the left vertical menu, then click "Tones" on the top right transverse menu.

- NOT the "Tones" folder under your device name on the left vertical menu. That menu only shows what ringtones you have ALREADY uploaded to your device.

- Enable "Sync Tones" if it's unchecked.

- "All tones" is selected by default, but you can click "Selected tones" to confirm the ringtones you have dragged into iTunes Tones list.

- Click "Apply" and your ringtones is uploaded to your device.

Step 5:

- In your mobile device, click "Settings" - "Sounds" - "Ringtone".

- If you have followed the previous steps correctly, your newly uploaded ringtones will appear on the "Ringtones" list above the default ringtones.

- Congratulations