Let's continue in this new topic...
Thanks for splitting the topic.
From the previous topic
Why not put that in a script?
...you can beep from the shell, so why have a bb applet?
As is often the case there are multiple ways of both looking at a matter and arriving at a destination. Using a simple script such as the one you suggest is a perfectly good answer for a Linux developer/experienced user. Typically this user has the necessary background to do it, or sufficient skills, time and inclination to research a way to do it.
Recently, there has been a great deal of discussion (and work), to make TC more user friendly. I am not contending that all new users of TC will require a beep function, the suggestion is more in line with the idea of greater ease of use. In my view it is more obvious to use an applet or program named beep than an obscure echo command.
From the previous topic
I don't see how there's a general need...
In this topic
http://forum.tinycorelinux.net/index.php?topic=9035.0, replies #10 and 11, two applets/programs (both coincidently named beep) were suggested. This may indicate that the respective forum members have/had a use for them. Alternatively they may simply have been sufficiently interested to post the results of a search. In either case one might conclude that the software authors envisaged a demand for their their apps. Way back to to dim and dusty days of DOS there have been beep utilities around and I have used them in various projects over the years.