I think they need to do, or at least try, multiple things here...
1. Lower the price of music, since you can acquire it for free has decreased its value
2. Market music in the form of USB's and digital cards that use a code for you to download your music onto your computer when ever. But like giftcards, the codes aren't activated until you purchase them at a cash register.
3. Maybe change the way they market and sell music all together by going back to 6-8 track EPs that are released yearly with 3 singles off them.
4. When releasing an album to itunes or any digital retailer, only make the current single available to purchase, and wait till the song gets released as a single to make it available to purchase singularly. Then after about a year, make all the tracks become available to purchase.
Some may work, and some may be bad ideas, but I feel like they're not really trying hard enough. They're just sitting there dumbfounded.
This is sad but the industry is so behind. They insist on doing the traditional way of things even though times have changed, they need to be innovative and come up with something new to keep people buying.
The physical CDs are expensive as hell I don't think many people will choose to buy a physical CD while buying a digital record is way cheaper at this time