Own RingTone Maker

How to use
Put songs on your SD card
The first step is to copy songs onto your SD card. Connect your handset to your computer using the supplied USB cable.
Your handset will now appear on your computer just like a disk, CD-ROM, flash drive, or external disk would.
Copy MP3 files and other audio files to your SD card, and then unmount the drive and disconnect the USB cable.

Features
Open an existing audio file
View a scrollable waveform representation of the audio file at 5 zoom levels
Set starting and ending points for a clip within the audio file, using an optional touch interface
Play the selected portion of the audio, including an indicator cursor and autoscrolling of the waveform
Play anywhere else by tapping the screen
Save the clipped audio as a new audio file and mark it as Music, Ringtone, Alarm, or Notification.
Record a new audio clip to edit
Delete audio (with confirmation alert)
Launches automatically in response to the GET_CONTENT intent with a mime type of audio/ if any other application wants to pick an audio file - for example the "Rings Extended" application.
Assign a ringtone directly to a contact.
File formats
MP3
AAC/MP4 (including unprotected iTunes music)
WAV
3GPP/AMR (this is the format used when you record sounds directly on the handset)