Even if you offered me a free CD sent to my door, I wouldn't know what to do with it. I suspect the optical drive in my laptop is dead (I tried to burn a Linux install CD out of habit about a year ago, three in a row came out corrupted, then I discovered installing from USB-drives) and even if I'd get it ripped, I'd need to distribute it between my personal laptop, work desktop and phone (for living room listening). And dealing with backup.
Or, if you were on Spotify, I'd invest the time it takes to type in your name and give it a listen. If I enjoyed it, I'd probably buy a ticket to your show when your tour comes to London.
You're awfully concerned with getting your as-of-yet non-existent fans to cough up their cash rather than focusing on discoverability and betting on the long tail (I'm rudely making the assumption that Irish folk songs performed on accordion isn't going to displace Rihanna and Justin Beiber from the Top 40).