Nokia has released a new beta version of its Ringtone Maker over on the Nokia Beta Labs. The app enables consumers to create ringtones from locally stored music files, removing the requirement to upload, edit and save files using various free web services. Numerous tools and controls are available to edit the chosen file.
Version 18.104.22.168 introduces support for MWA, M4A, WMA and AAC formats alongside MP3. Minor optimisations and bug fixes have also been applied to improve stability. Be sure to head on over to Nokia Beta Labs and the Windows Phone Store to download the latest version of the Nokia Ringtone Maker beta (listed for Windows Phone 8 only).
Source: Nokia Beta Labs; thanks, OscarMaDi, for the tip!