Which software will let me add 'track marks' or edit when recording streaming audio?

I hope somebody can help me with this.

Once the recording of streaming audio (online radio) has started I need to be able to add 'track marks' as and when to divide up the recording. Is pausing / un-pausing an option, or doing the same thing with stop / start, but without having to stop the audio stream? Or to be able to edit the recording in the same way once it's ended. Also, the software needs to support both Real Player and Windows Media Player. Any ideas?

Thanks for your help and time people.