This is the place where Stones fans can advertise anything for sale, wanted, trade or whatever, from fan to fan. Advertisements are for free. To see the old ads go here.
This has been recently discussed ad nauseum in previous posts. Do a search using the command at the top of the Message Board. Search FLAC and/or mp3. You basically get a free program off the internet that converts these file types (among others) back and forth. Depending on your computer/operating system etc. you will have to select a program that is compatible.