In one of my occasional Actually Buying Things Legally Online experiments I bought some music from Tesco Digital (on grounds it was the legal download site that happened to come top of my Google search at the time) more than a week ago. Needless to say, I still can't listen to it. Of the four computers I've had a stab at downloading it to (with the exception of my EEE all bog-standard Windows machines), only one of them was even able to successfully capture the files and the route from there to my mobile phone - where I actually want to listen to the things - is so labyrinthine I have essentially abandoned the attempt. My email to technical support took a week to answer, and the answer was the sort of templated, multi-fit request for clarification that may as well have just said outright "please do not ask for technical support as having your throat torn out by a savage bird while a disembodied hand smashes your head against the bar often offends".
If I understand it aright, the point of DRM is to prevent theft (or if you're being pedantic copyright violation of intellectual property). Currently Tesco has £16 of my money and has given me nothing in return. It is pretty clear to me where the theft lies in this relationship.
It is of course not an original observation that ten sodding years ago Napster was much, much better than this. That I'd happily even pay Actual Money for access to something that good, convenient and DRM-free today. But I would. And in the meantime, I'll go back to the marginally less laborious work-around of buying and ripping CDs.
Oh, and the music? A couple of Bob Marley albums. Don't worry about a thing indeed.