Currently SongKongs writes performers to the TIPL or TMCL field for ID3 for other formats it just writes to a PERFORMRER field. Whilst this is correct the problem is that MinimServer does not support TIPL/TMCL so therefore cannot see these performers for ID3 format.
So we need to modify PERFORMER for ID3 to write to a TXXX:PERFORMER field
And introduce a new INVOLVEDPEOPLE field that continues to map to TIPL/TMCL/IPLD for ID3 but simple INVOLVEDPEOPLE field for other formats.
So we can end up with essentially the same information in two different fields but we have to have this because MINIMSERVER requires data written PERFORMER field to work properly, whereas ROON requires data written to INVOLVEDPEOPLE and NOT PERFORMER field.
So may need add more profile/options so this clearer to users.