Reported by FlipGer, confirmed by ronilse & micheloe

Pressing F7/F8 while a radio station is playing causes the playlistplayer to cycle rapidly through all items in the temporary playlist. This continues indefinitely if "repeat/loop playlists" is enabled and no internet stations are found in the playlist. This might lead eventually to a crash.

More info and logfiles here: http://mediaportal.elite-squad.net/forum/showthread.php?t=453

h4. Additional Information
How to reproduce:
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- start playback of first station in the listview
- press F8 or "Next"
- notice MP cycles rapidly through all radio items in the listview