How Can I Listen to/Watch RealOne Streamed Content (RealAudio/RealVideo) on my Pocket PC?

http://www.smartphonemag.com/blogs/index.php?blog=3&p=343&more=1

Unfortunately, the Pocket PC version of the RealOne client is, to put it mildly, far from perfect, which is particularly painful because a lot of Web content is only accessible in a streamed RealOne format. The following scenarios are possible: - you're using a mobile dial-up connection (GSM, GPRS, even including fast(er) ones like EDGE or UMTS). In this case, you can't use your RealOne client at all because your GSM provider uses so-called "firewalls" and, therefore, it's impossible for the RealOne server (the server your PDA connects to) to connect back to the PDA. (This is the case with using a RTSP proxy too.) It's only in some contries (for example, the UK - see this thread) that GSM/GPRS operators put clients in a DMZ; there, you can access streamed RealMedia contents. Please let me know if your particular mobile phone operator allows for this so that I can have an updated list of them! - you connect to the Internet at home, through your Wi-Fi access point (AP for short), which has full, unrestricted Internet access and can be freely configured. In this case, you must put your PDA in a DMZ by configuring your access point. (Note that plain port forwarding (NAT) won't work!) Alternatively, if you don't have/don't want to use DMZ but have access to a RTSP proxy, you can also have access. - you access the Internet via a firewalled Wi-Fi Access Point (for example, at work/using a public AP) you may not configure; that is, you can't tell it to put you in a DMZ. In this case, it's impossible to access the streamed contents unless you have a RTSP proxy to connect to. - You connect to the Internet through an ActiveSync connection (which can even be wireless; that is, through a Bluetooth or a Wi-Fi peer-to-peer connection). In this case, you must set up an additional, "real" network between an Internet-enabled desktop PC (even the one your PDA connects to via ActiveSync) and the Pocket PC with, say, Bluetooth Personal Area Network (BT PAN). It's far easier than you think and it can even work when the PDA is cradled and connected to the desktop computer via USB. That is, the ActiveSync connection can co-exist with the BT PAN network – they won't interfere in each other. If you use BT PAN with a desktop computer, you must 1, share the Internet connection of the desktop computer to the BT PAN 2, unless you connect to a so-called "RTSP proxy" (you can run a proxy like that on your desktop PC too), also port forward the UDP ports 5000-30000 to the PDA. As it's impossible to set up a DMZ with a software-only networking situation like this, this case is a bit more complicated than the case of connecting to the Internet via a Wi-Fi access point. A comparison chart summarizing all these scenarios:

Connection type:	Mobile connection (2G GSM, 2.5G GPRS/EDGE, 3G UMTS etc.)	Configurable Wi-Fi AP	Not configurable, firewalled Wi-Fi AP	ActiveSync
Not using a RTSP proxy	- if there's no DMZ provided by the mobile operator	+ with configuring the AP to put the PDA in the DMZ	-	+; Strictly (to the AS connection) additional BT PAN/Wi-Fi P2P network with ICS and UDP port forwarding
Using a RTSP proxy	- if there's no DMZ provided by the mobile operator	+; No changes in the AP are needed	+; No changes in the AP are needed	+; BT PAN/Wi-Fi P2P network with ICS

Now that you know whether you can have RealOne access at all (that is, you know you aren't on a mobile phone-based connection), please read THIS TUTORIAL on the subtleties of setting up the network.