Recording
Most stations that stream MP3 or OGG music can be recorded. This is accomplished by the commandline tool "streamripper". If you select a station a press the [record] button, a console window should appear. Within that streamripper outputs its current activity.
Per default recorded streams are written into the current directory. Often this is your home directory. And streamripper automatically creates a directory with the recorded radio station title as name. Within that directory the individual music titles are split into separate .mp3 files.
You can influence all these behaviours with -arguments to the streamripper program. Please refer to the manpage of streamripper. The options are too various to list here. You can set default arguments (e.g. another default save directory) in the 'Apps' section of the streamtuner2 configuration dialog.