Roberts R100 Manual page 114

If your radio can connect to the network, but is unable to play a particular
Internet radio station, it may be due to one these causes:
1. The station is not broadcasting at this time of the day.
2. The station has reached its maximum allowed number of simultaneous
connections.
3. The Internet connection between your radio and the server (often
located in a different country) is slow. This could be due to internet
congestion, either locally or at a distance.
4. The station may choose to block internet connections to your geographic
region (sometimes known as geo-locking).
5. The station is no longer broadcasting. The database of radio stations
that your radio connects to is frequently updated and checked but
may not always be completely accurate.
6. The radio station is broadcasting using an audio format which is not
playable by your radio (although the R100 does play the most popular
formats used by regular broadcasters).
Try using a PC to listen via the broadcaster's web site or via the radio
station database web site at
can play the station with a PC, it may be that the internet feed or local
network connection is poor. However, some broadcasters (such as the BBC)
provide different data streams for PC users and Internet radio listeners,
so this test is not always conclusive.
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If you cannot play the station via your PC this may indicate that the problem
is not necessarily due to your radio, but it could be your network, your
internet connection, the broadcaster, or internet congestion.
Music Player / UPnP problems
The use of the Music Player function with UPnP should be straightforward.
However, the cleverness of UPnP means that it is often disabled by default
by security applications and in routers.
If you are using Windows Media Player 12 as your UPnP server, and if
it fails to operate with your radio, please keep this fact in mind: A fresh
installation of Windows and Windows Media Player when using Microsoft's
If it does not work, possible reasons may include:
UPnP functions turned off by security software
UPnP functions blocked in the router
Multi-cast packets blocked in the router
. If you
Some third-party UPnP servers are much less dependent upon other parts of
it may also be found in some cases that they are easier to get working.