Blu-ray players support 7.1 audio formats and high-quality, lossless surround sound. While your high-def disc player and receiver may be able to decode these new surround sound formats, not all discs you play will take advantage of them.
You can choose to store your files on your Chromebook or online with a cloud-based file storage service like Google Drive. With Google Drive, your data is stored in Google's highly secure data centers. The Terms of Service make clear that what belongs to you stays yours..
There are a lot of advantages to using Cloud-based services or Cloud computing. The first is that your media lives in a place not on your own device, so you can get it on multiple devices. You can check your email on any computer or access your photos on Flickr or iCloud on any computer. And with cloud storage services like Google Drive, Dropbox, or SugarSync, you can store your files. That also means that those photos, files or songs are being backed up on those various services. So if your hard drive crashed, you'd have a backup of all your files instantaneously; you'd just log in on another computer to one of those services.