It is possible to use BAOne for "general computer usage" with one HD core. However, like its other poor cousin, Breakaway DJ, there is no free upgrade path, so you would have to purchase a complete full licence if you migrate.
I have been running the trial version of BAOne, and it is very, very good, but I am unsure whether to lash out the US$248 for a single core plus management, or just settle for my already paid for BADJ. Perhaps Leif might consider a cut down version of BAOne with just one core and none of the streaming options or other "frills", but with the new engine and range of presets.