Need to add new songs to iphone without deleting old songs

So my old computer crashed and with that i lost all my music that was downloaded to itunes, so i only have those songs saved to my iphone now
i just spent $25 on my computer downloading music, but when i went to download it onto my phone it said it didn't match up with this computer and that in order to sync new songs it would delete my entire music library on my phone! I really don't want to lose all my music but i also want my new songs on my phone!

Use via bluetooth from some others mobile

You can store your old songs on your computer. Then transfer them to your iTunes after you get new songs. TuneClone can convert iTunes music to common used MP3 audios and store them on your computer automatically.

TuneClone M4P to MP3 Converter Releases the Limitation of iTunes Music: http://m4ptomp3.tuneclone.com/tuneclone-m4p-to-mp3-converter.html