Yea, those audio applications don't currently use GPU acceleration - so there really isn't any benefit to be gained from a discrete graphics card. As for photoshop, there is a bit of extra performance to be had, but if you aren't using it too much then the onboard should be good enough.
If you haven't bought the CPU yet (you sig says "i7 2600") then I would strongly suggest you get the K-series version of that CPU - the
i7 2600K. As this one not only allows proper overclocking (which is very easy to do and allows significant performance boosts in CPU-heavy applications) but it also has an onboard GPU which is roughly twice as powerful as the one on the standard i7 2600.