Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Crosley CR249 TA Keepsake USB Turntable (Black)
Product description: Can't bear to live without your vinyl albums, yet can't seem to find the time to fire up the record player these days? Well, have we got a solution for you The Crosley Keepsake. You can now simply take your old vinyls and convert them to CD in minutes with just a few simple steps. The Keepsake allows those old albums to be recorded in a digital audio format for high quality sound on a smaller, more modern compact disc. It easily interfaces with the USB port on any computer by utilizing the supplied software suite. However, if you still want to enjoy your albums old style, then Crosley's Keepsake offers a 3 speed turntable for your listening enjoyment. Preserve your entire music collection with the Keepsake. (Compatible with NP4 replacement needle.)
Product brand: Crosley
Target attributes: Weight
Answer: attribute: weight
value: None
source: None