Had a try at setting up Asset UpNp to get it to talk to JRiver..
cant get it to work, can you advise how to?
Try this:
1) Install Asset in the server PC
2) Open Programs->Asset UPnp->Asset UPnp Configuration
3) Check Asset Running Mode: Local Account
4) Click on Edit button to the right of "Advanced Settings" label
5) Click on "Add Folder" in the "Audio Library" box and add your audio files location
6) In Audio Format Streaming box go down until you see the line "FLAC as is"
7) Click on "as is" and change it to "as WAV"
8 ) Click on "OK" to close "Asset UPnP Configuration: Advanced Settings" window
9) In main "Asset UPnP Configuration", the line "Status: Library Contains xxxx Tracks, yyyy Albums" should include the correct count for your library number of tracks/albums. It takes a while, so wait until it finishes.
10) Server configuration should be OK now. If your client computer is Windows 7, you can check server configuration opening client's Windows Explorer and clicking on the Network icon. Under Media Devices you should find an icon labeled "Asset UPnP: server_name", where server_name is the name of your server. If you see it, the Asset UPnP configuration is (nearly) correct.
11) Open MC on client PC
12) In Tools->Options->Media Network check "Use Media Network to share this library and enable DLNA"
13) In the same page Click on "Advanced" and check that you have DLNA Controller enabled. DLNA Server and Renderer are not needed, but they won't hurt if enabled. Click OK.
14) In the left pane click on "Playing Now" and then on "Playing from ....". You should see an "Asset UPnP: server_name" under "Playing from ....". If you don't wait a bit, it should appear in less than 30 seconds. When you see it, click it.
15) Click "Load Library" button in MC main frame, on the right. Let it load the library, it takes 20/30 seconds.
16) Click on "Audio" and you should see all your library.
17) If you select one of your tracks, the filename should have the form: http://a.b.c.d:ppp/content/c2/b16/f44100/dnnnnn-co1.forced.wav
This would mean that you see your library and that Asset is converting it to wav as instructed.
Please note that choosing "Local Account" in point 3, means that Asset is started only when you log in. If you want Asset to start at boot, you need to run it as a service, but I advise you to first get it working with the, simpler, Local Account configuration and then configure it for service mode.
Try and let me know.