M4R to AU Converter
Convert your m4r files to au online & free
MPEG 4 Ringtones Audio
Sun Microsystems AU files
How to convert M4R to AU
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to au"
Choose au or any other format you need as a result (more than 200 formats supported)
Download your au
Let the file convert and you can download your au file right afterwards