Where should society concentrate its efforts to provide for the basic welfare - the security and subsistence - of animals? Plainly, where animals most lack this security, when their basic rights, needs, or interests are most thwarted and where their suffering is most intense. Alas, this is in nature.
An app which found remixes and mashups of songs you like might be cool, I guess there are apps which kind of do this, but they seem to be more to do with seeing what people with similar music taste like
"That's one of the great things about utilitarianism, actually: It's a form of unconditional love. No matter who the organism is or what he/she has done, his/her happiness and suffering still count just the same." -- Brian Tomasik
"The antispeciesist claims that, other things being equal, conscious beings of equivalent sentience deserve equal care and respect.”
— David Pearce
"Is this the rumoured ache of feeling?
The feeling of caring unknown to lemons.
New thoughts emerge:
If I act the candy people will suffer,
If I don’t the lemon people will suffer,
The greater good demands but one course only" - Lemon John - Adventure Time