You may try to increase buffer size to avoid audio skipping.

VLC has its own support forum and you should be able to solve your problem there. Make sure you use the latest stable version of VLC first.

There are lots of other programs that can be used to rip audio streams from BBC Radio One:
www.bbc.co.uk: How to record BBC Radio 1 stream from BBC iPlayer (RTMP .flv, RTSP .ra, MMS .wma)