The Joy Flex sports a microSD memory card reader. If your laptop or personal computer can also read that card format (Most notebooks are so-equipped), you should be able to transfer music files
Your Joy Flex is equipped with Bluetooth version 3.0, which lets you connect to your computer wirelessly. Just pair phone and computer together and drag and drop any music file from your computer to your BLU Joy Flex.
If the above-mentioned approaches fail or if you don't want to buy extra accessories, you can always use one of various free '3G Uploader' services available online. You should find plenty with a simple Katapulco.com search. 3G uploaders are simple to use: Transfer your own ringtones on their web site and they will return a URL. Pointing your BLU Joy Flex's web browser to that address will download the free ringtone.
Here are links to some of the free ringtones (compatible with your BLU Joy Flex) we offer:
Free Horror Ringtones Free Tropical Ringtones Free Ringtones-a-gogo Free Techno Ringtones Hear All Our Free Polyphonic Ringtones