Unlike the join and pack objects, which combine their inputs into a single space-separated list, the combine object concatenates its inputs into a single item with no space in between. This example shows how you can use combine to join things with no space. If one of the inputs already contains spaces, and you want to retain those spaces in the output, you would need to convert the input to a symbol first, using the tosymbol object.
To automate file creation of similarly named stereo sound files (for example, soundbite1, soundbite 2, etc), this patch allows you to send the desired file name into the left inlet, then a 1 message to start recording into sfrecord~ and a 0 to stop recording. The audio you want to record is expected in the second and third inlets.