iTunes sales shrinking?

AppleInsider has a story about how iTunes music purchases may be shrinking instead of growing.

I know from personal experience, I've owned an iPod for a couple years and I still buy CDs instead of albums from iTunes. iTunes is great for purchasing individual tracks, but $10 (or more!) is still too expensive for a full album when I can get a CD from Amazon for the same (or a couple bucks more). With the CD I get better sound quality, a backup and a printed insert.

iTunes needs to make purchases more tempting with albums costing $5 or $7. But, of course, that's not fully up to Apple. And the record companies seem intent on continuing to shrink their market by charging too much.

Update: Another analyst says iTunes music purchases continue to be strong.