But customers wanted to play music in multiple rooms this meant a way was required to stream music to players that could reside in different locations to where the music was stored, and they wanted to be able to control this from a single point, uPnP AV addresses these issues. Hi-end audio manufacturers such as Naim and Linn started to see the potential of using hard drives to store music rather than always playing from the original CD.
When people talk about uPnP they usually mean uPnP AV, on this blog we are interested in the A part. What is uPnP AV AV refers to Audio Visual - this takes UPnP and develops standard for audio and visual, i.e hi-fi systems, televisions, set-top boxes and the like. If your library is really large and you have only changed a few files then you can just select the modified files instead of all your files. This may take a few minutes depending on how large your JRiver library is. Then select Tools:Library Tools:Update Library (from tags). Luckily this is easy enough, just use Edit:Select All to select all your songs within JRiver. The disadvantage is that if you modify the files with some other tool such as SongKong then JRiver does not know that anything has changed, you have to tell it. The advantage of creating an index is speed, you can now browse your file metadata within JRiver very quickly without JRiver having to go back to the files themselves, it only has to go back to the file when you actually want to play the file.
The problem is that JRiver (just like iTunes) build an index of all the metadata the first time the files are added to JRiver. Although SongKong appeared to have updated his songs correctly when he looked at the songs in JRiver there was no change, restarting JRiver made no difference. A SongKong customer asked me about a problem he was having with SongKong and JRiver Media Center this weekend.
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