I wouldn't use a laptop to STORE files, but you could use one as your interface, server. Laptop components run too hot and are too unreliable for long term file storage. You need a desktop or NAS for that, preferably with enterprise grade 3.5" drives and ventilation. Also, if your laptop requires replacement it would be a chore to retrieve your library.
The best solution will be to have a small silent, solid state drive based device (HTPC, notebook, tablet, ect) in the listening room (the drives are too small and expensive to be of much use right now) and then a network attached drive or drives for the files.
The best solution will be to have a small silent, solid state drive based device (HTPC, notebook, tablet, ect) in the listening room (the drives are too small and expensive to be of much use right now) and then a network attached drive or drives for the files.