I have a macbook air with limited storage. I am out of space and would like to free up storage on the main hard drive and my itunes folder is taking up the bulk of the space. If I install an SD card into the machine, can I move my itunes library to the sd card as a permanent solution (i.e. and be able to access and play the music as i would on itunes?) I saw that there is one solution made by Tardisk but it seems awfully expensive to pay $150 for an extra 128gb. Thanks in advance.