Convert many M4As to M4Rs ringtone files. Then choose "Trim video" and verify the option "Convert from start time to end time" to get the video clips. Convert MP3 to one thousand+ codecs, together with M4R, FLAC, MOV, MP4, and many others.…

Convert many M4As to M4Rs ringtone files. I can flip MP3 to M4R however how can I do it backwards? How to make iPhone ringtone M4R file appropriate with other phones, like BlackBerry, Samsung Galaxy? The way to convert a sound that's in M4…