I use this card for my digital camera, for the car radio, the radio recorder for your computer or laptop and the TV. Filbe, pictures, MP3 files and can be transported on, or played. For example, are housed on the 4GB SD memory card for my car radio 1400 songs in MP3 format in 7 folders. These were formerly about 100 CD's. Just as is true for pictures and movies. At a size of 4GB then the matter is still relatively manageable. I shudder now before the over 100GB SD card. But the 4 GB SD card I can wholeheartedly recommend.