Here's more good news - computer-based programs look like they have promise in training up auditory working memory and visual perception. If you can find it (i.e. specify the problem), you probably can refine it.
First the visual - the figure below shows how training in a fairly intense 10 hour visual program corrected age-related visual perceptual decline.
From the auditory memory PNAS study, improvement could also be seen in most participants, although the magnitude of improvement was slight in some cases, suggesting that more tweaking is probably needed in the program. The results are promising, but statistical significance doesn't necessarily mean practical benefit.
Memory enhancement in healthy older adults
Posit Science Visual Perceptual Training