Please kindly refer to the following:

http://forum.asustor.com/viewtopic.php?f=54&t=4037&sid=06bf3d740dde7943129ae70f55b41b70

1. Download the wanted version (just the perl tarbal version) from http://downloads.slimdevices.com/
e.g. http://downloads.slimdevices.com/nightl ... 473400.tgz
or http://downloads.slimdevices.com/Logite ... -7.7.0.tgz (or the link pasted by cncbb above)
 

2. And rename the downloaded file from logitechmediaserver*.tgz to squeezeboxserver*.tgz (e.g logitechmediaserver-7.8.1-1407473400.tgz is renamed to squeezeboxserver-7.8.1-1407473400.tgz)

3. Access the ssods webpage (when LMS App is enabled) on http://NAS_IP:9099

Click Status, Stop (to stop LMS)

4. Then Go to tools, and select "upgrade Logitech Media Server"

Click "next"

You should now be at http://NAS_IP:9099/ssods/?cmd=Install_upload. 
Option 1. Select the file saved previously and then select upload tarball or
Option 2. Copy the saved file to your Public network share. and then refresh the web browser.

Select this file in the list and select the option to upgrade to this version.

This should update, provide some update information and have an option to "Start Logitech Media Server". Select this and verify the LMS is now available at http://NAS_IP:9000

This method should support all versions including 7.8 (at this time). The key is to remember to rename to squeezeboxserver!

**Note:

Some of you may find that this just says "website not found" then trying to upload the tgz file.
It appears there may be some limit on the size of files that can be uploaded!

The alternative is to copy the file into your public share (smb or nfs)

So, just copy the file squeezeboxserver-7.8.0.tgz to your Public share and this version will be available for update.

Also note there is s 7.9 beta available.

http://downloads.slimdevices.com/nightly/?ver=7.9