Opensound driver

[Toosa <toosa@jakarta.linux.or.id>]

I've ordered and paid for $20 to www.opensound.com for the oss driver.
(this is for my ASUS L8400C - ES1988 Allegro-1)
And I've tried to download osslinux393s-2217-UP.tar.gz(94 byte).
but it cannot be decompressed with 
gunzip -d osslinux393s-2217-UP.tar.gz
the error message is : gunzip: osslinux393s-2217-UP.tar.gz: not in gzip
format
nor by: tar -zxvf osslinux393s-2217-UP.tar.gz

any idea ?
Is the problem comming from the oss's file ?
Or I used wrong procedure ?

Thank you.

=Toosa=