Voice/Music Issue==Sr.Newbie ???

[Balmybruce]

Im a pensioner who has never used Audacity(1.2..X) and find it powerful enough to be confusing! Problem: Mono voice recording off a phone line to a cassette which was not totally erased. Half way thru the original Music (on the other stereo track/) makes the phone conversation difficult to hear. I cant seem to get a spectogram/waveform to see if the music is on a separate track OR on top. Pls confirm best method? Do I have to record the cassette first, playback and clik spectogram to see if its on 2 channels?? If so I think I could MUTE the music channel and then record the voice channel as a new project??
IF the music is on top of the voice (which I doubt) could I then use the ?FFT filter to lower the Db on anything over say 4K?
LASTLY if as and when I get a 'voice only' copy-Is there anyway I get it back to cassette format OR do I have go with a CD as my playback media?
This is for a sort of Court/Arbitration thing where this Company findangled me out of a big chunk of Pension $$s.
Thank you in advance for reading this and perhaps helping me (KOZ? ) Its somewhat urgent.

[Irish]

You can record the cassette as a stereo track, then use "Split Stereo Track" in the track dropdown menu to convert it into two mono tracks. You can then treat the two mono tracks completely separately.

The spectrogram won't tell you whether the music and voice are on the same track. Listening is a lot easier and quicker.

If the music and voice are on the same track, it will be difficult to separate them, but it may be possible to get enough separation to be able to hear what is being said.

Export from Audacity as a WAV file. Then you have the choice of transferring it to other media.
If you have a cassette recorder with a Line-in input, you can connect the line-out or headphone jack (depending on the type of computer you have) to the cassette recorder input.

PO'L