Re: Big R Radio, it's probably just because the feed urls that stations tend to make public link into their web flash player (I had the same problem when adding BBC stations). The solution is to get the feeds from shoutcast.com or listenlive.eu. From shoutcast (rightt-click and Copy Link Address to get url from their search results):
Code:
Big R Radio Erins Chill
http://yp.shoutcast.com/sbin/tunein-station.pls?id=117663
Big R Radio 80s FM
http://yp.shoutcast.com/sbin/tunein-station.pls?id=396618
Big R Radio 80s Metal
http://yp.shoutcast.com/sbin/tunein-station.pls?id=134938
Big R Radio 80s and 90s Pop Mix
http://yp.shoutcast.com/sbin/tunein-station.pls?id=24663
Big R Radio 70s and 80s Pop Mix
http://yp.shoutcast.com/sbin/tunein-station.pls?id=331365
Big R Radio 100.7 The Mix
http://yp.shoutcast.com/sbin/tunein-station.pls?id=24327
Big R Radio 100.5 Classic Rock
http://yp.shoutcast.com/sbin/tunein-station.pls?id=27258
Big R Radio 101.6 Warm Hits
http://yp.shoutcast.com/sbin/tunein-station.pls?id=1515630
That said, I chanced across a better source here:
http://flv.bigrradio.com/
For each station, find mountpoint '100point3mp3' and right-click and Copy Link Address on either 'm3u' or 'pls' to get a workable url, e.g.
Code:
Big R Radio Oldies
http://flv.bigrradio.com/100point6mp3.m3u
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Dunno about AllDanz though, are they a legit station or do they leech content from other stations? (If the latter, you'll need to search shoutcast for the station they're actually playing).