get Media File
Gets a java.io.File object representing the local filesystem path to the actual file data, if available.
This method provides access to the file's content on the local device, typically after it has been downloaded or cached by the player. The returned java.io.File
may point to a temporary location.
Note: The file at the returned path may not always exist (e.g., if it hasn't been downloaded yet, was deleted, or this File
instance represents remote metadata only). Always check java.io.File#exists()
before attempting to access its content.
Return
A java.io.File object pointing to the local file, or null
if the file is not available locally or if this File
representation does not correspond to a local file.