Surfinn, what states? Show me the State statutes where it is illegal to record someone without their knowledge when they have approached you and are voluntarily engaging you in conversation, like in Plawnranc's case, demanding he speak with them as an employee. Wiretapping is not the same thing as this. The PA law above mentions "general rule" about electronic surveillance, which this is may or may not be, it does mention recording in following paragraphs, but what is a "general rule?" A "general rule" is not necessarily a law, In this case, the recording of communication is for the protection of the individual doing the recording.
Also, most importantly about the link above, is: 'The following article was written by the late Eric M. Noonan, Assistant Executive Deputy Attorney General.' And it is 15 years old.
There are laws that protect employees, citizens and subjects that are not applicable to other types of parties. The mention of 41 other states in the PA AG Assistant's article link above does not state which other states they are referring to, nor their nature, simply that other states have them. The PA law MAY allow such evidence to be disregarded, but without reading the whole thing, which I have no interest in doing so atm...I would imagine employees might not lose their evidence if they are recording their employer under whistle-blower law, if there is not an exception for this then - It sucks to be someone in this position in PA.
However, Plawnrac is in WI iirc and hasn't answered anybody since starting this thread, a wise choice btw. But without further knowledge, we really have only a very vague idea of what he's talking about.