Roger, A CD can hold 600MB to 700MB of data. If all six CDs are full then you have 3600MB to 4200MB (3.6GB to 4.2GB) of files. You can check how much space is used by each CD by going to My Computer and right clicking on the drive that the CD is in and looking at "Properties". How much you can get on the BC depends on the size of your Flash Card. The card currently shipped with the BC can hold 256MB. The maximum capacity card you can use in the BC is 2048MB (2GB). Bear in mind that a small amount of the capacity of the card is used for system information and you don't get all the space for files. I bought a 2GB card for use with my BC. I hope this helps. Bruce. ----- Original Message ----- From: "Roger E. Baccus" <rbaccus@xxxxxxxxxxxxxx> To: <bookcourier@xxxxxxxxxxxxx> Sent: Monday, April 25, 2005 5:18 PM Subject: [bookcourier] HowMuchCanTheBcHold? I have a collection of MP3's on six CD's. Can I put all of that into a BC?