You are trying to mix file protocol with http protocol, that won't work.
The parameters need to be separated from the file path.
Edit:
As long as the path is correct, you can try:
sudo php5 ./media/linkstation/myfolder/import/import.php id=4
Now the first arg $argv[1] is the query string, so long as that is a single string (or wrapped in quotations) it will appear on the receiving end of the script. After that you can treat it as you like.
However there are more suitable ways to delivery parameters. You may find command line options more useful: http://php.net/manual/en/function.getopt.php
sudo php5 ./media/linkstation/myfolder/import/import.php --id="4"