use alcohol 120 it copy both music and datas and it has a virtual drive which is pretty rly useful if you have many cds on ur comp

its totally normal that an image is bigger in size than the actual data!

the data is stored in blocks. each block has a size of 2353bytes. but only 2048 bytes are used for data. the other missing bytes are for subchannel data, error correction etc.

when reading an image every block is copied with its full size. when copying the _data_ to your hdd only the 2048 bytes will be read.