How to create iPhone 4 ringtones on computer?

So you bought an iPhone. You love the phone and all its features, but wish you didn't have to pay for your songs twice to get a ringtone. There are plenty of songs in your music library, but no way to make ringtones from any of them. Or is there? Actually, with a little bit of trickery, you can create iPhone 4 ringtones from any audio files easily and for free. Maybe iMacsoft iPhone Ringtone Maker will be the best iPhone 4 ringtones creator tool.

Step 1: Add Audio files
Hit "Browse" button to load audio files from computer folder, also in the top "File" menu, you can choose "Open file" option to add audio files. In the dialog box, locate the audio files on computer and press "Open" button to import audio files into program.

Step 2: Adjust the output settings
Rename the ringtones files you wanna create for iPhone in the "Output File Name" textbox or keep the original name. In the "Output Folder" box, you can output the converted ringtones folder on computer by clicking "Browse" button. After you create iPhone ringtones, press "Open..." button to directly find out the created ringtones in the computer local.

Step 3: Customize the ringtone
1. Extract a clip
Click "Play" button to listen the music and find the part you want. Drag and drop the start & end sliders to get a music clip, or click "Set Start Point" and "Set End Point" buttons to extract a clip when the player comes to the points you want, or type the start & end time directly in the corresponding text boxes.
2. Add fade-in and fade-out effects
Check the "Fade in" and "Fade out" checkboxes, and set the fade-in and fade-out time according to your need.
3. Adjust ringtone volume
Drag the volume slider to set the ringtone volume freely.

Step 4: Adjust the file transfer settings
If you want, check "Add to iTunes" and "Add to iPhone/iPad 2" options to let the program upload the ringtone to iTunes and your iPhone directly after conversion. Click "Manage Ringtone" button to manage all the ringtones you uploaded to iPhone in the "Ringtone list" dialog that opens.

Step 5: Create iPhone 4 ringtones
All settings are done, pess "Generate" button in the bottom, so fast the audio clips are created iPhone 4 ringtones. If you wanna transfer those ringtone files to iPad/iPhone/iPod touch, check the two options "Add to iPad/iPhone" and "Add to iTunes" and connect iPhone/iPad/iPod touch to computer. And all ringtone files can be seen in the "Manage Ringtone" box, there are all iPhone ringtones listed there, you can free "Delete" "Rename" or "Transfer".