Something that all electronic manufacturers like to put on their products nowadays so they will "do their little bit for the industry"
The DRM feature is actually no use to you but people still buy it because all the companies get together and say "we will put DRM on all the products we can from now on"
A little pesky feature that only helps out the content industry but not the person owning it.
Normally you can do what you like with any product you buy, unless it has DRM in which case it will do what the content industry wants it to do as opposed to the person who owns it.
You go into a shop, pay £400 for a brand new iProd to find out that it doesnt do what you want it to do (copy songs??) even though your the one who paid £400 for it. Instead it helps out the recording industry and guess how much they paid for your iPod?? NOTHING! It isnt theirs, but the DRM "helps them out" anyway