Is Digital Rights Management Hurting Music Sales?

Looking at the title and judging by Tower Records departure from the retail world, I would guess price is more of an issue then anything. The article does make an excellent point, removing confusion caused by DRM and competing technologies will only increase the available market. A bigger pie so to speak.

From the article:

As digital music becomes more and more accessible to consumers, through the use
of music servers, media centers and iPods, digital rights management (DRM) will
continue to pop up as an operability issue. Music purchased from certain online
retailers, such as iTunes or MusicGiants, can't be used on systems that don't
support that particular format.