Can I use DRM-protected files (e.g., .m4p AAC files from the Apple music store) in Live?
Live doesn’t support DRM-protected files and this will probably not change in the near future, as rights management is a task that basically has to be performed by the underlying operating system (Windows or Mac OS). The legal issues involved are more than complicated considering that Live is an application that by definition allows remixing, instant-editing and internal re-recording.