In an embodiment, a local version of a file is found in response to detecting an access of a remote version of the file. In response to the detecting, a determination is made whether the remote version meets a rule, and if the rule is met, then the local version is updated with the remote version of the file if the remote version is valid. The rule may be customized for the file. In various embodiments, the determination includes determining whether the remote version of the file was created more recently than the local version, whether the remote version has a level that is greater than the level of the local version, or whether the remote version is stored at a source location specified by the rule. In various embodiments, the level may be an audio or video quality of the file or an update identifier of the file. In this way, out-of date local versions of files may be updated with newer or better remote versions of files.