Your Galaxy S Light Luxury features a microSD memory card reader. If your personal computer can also read that type of card (Most laptops are so-equipped), you should be able to save a music file
The Samsung Galaxy S Light Luxury is an Android phone and there are plenty of free ringtone apps such as MP3 Cutter, RingDroid (open source) and more.
Here are some of the free ringtones (Samsung Galaxy S Light Luxury-compatible) offered here at MartinsRingtones.com:
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