JPF Home Page Forums Lyric and MP3 Feedback MP3 Feedback Forum Sync This :)

If Synchronization Licensing is your intent, some evaluation of tracks seems logical, to assess potential for that 'use'. Almost anything has potential, but some more than others. Your task would be to select a manageable number of the ones you think your 'Company' might want to pitch, without knowing an intended 'use', commercial ad, TV show, internet ad, soundtrack. Listening to all 500 to re-familiarize yourself with what you have, perhaps making some 'category' notes you can reference if someone gives you specifications, reference Songs they'd like to have something similar to, so you can quickly find them and respond might be a place to start. Can your 'Company' manage all 500 or can you select a smaller number to work with? Your Company; your decision.
Your copyright questions can be answered at www.copyright.gov (USA; other Government entities in other countries.)
Once upon a time a single fee could cover a single Song or a Collection. Times change with who wield Government authority to make such decisions so going to copyright.gov is part of your Company's 'due diligence' to know the facts.
Copyright Law is Federal. Any attempt to get a Hearing in Federal Court requires a Registration. Your lawyer would have to present your case to a Federal Judge who would assess its merits, the likelihood the lawyer can prove the case, before letting you bring an Infringement Suit. The first item of assessment would likely be whether you have a Registration with the Register of Copyrights, Library of Congress.
For the cognoscenti, it is my understanding that you can zap a Registration to www.copyright.gov electronically, pay the fee ($20 the first time I did it, $45 the last time I did due diligence at copyright.gov). If all your data is accurate and your fee paid, the Registration date is the date of receipt, so, quickly accomplished.
I Registered about 32 Songs in a Collection, back when the world was young and the young were filming and recording me live with video cameras and those new-fangled telecomputers they all started carrying around in their pockets. Protected by Registration, I played with confidence that no one could steal my product, Intellectual Property, with potential for dollar value. That was back in the last century and no one has stolen anything, that I know of! Worked like a charm!
At that time I paid the same fee as I would for a single Song, to Register those 32, and 135 more, my 'Catalog' to date.
Now? Do your research so you will know where your Company stands. Relying on some guy on the interweb who read copyright.gov Circulars 26 years ago is not advisable. Bachman Turner Overdrive: "Takin' Care Of Business". Every day, in every way. You have to be a serious 'business-man' if you're going to present yourself to other Companies with product to 'sell', to 'License' for 'use'. They have to know you know what your signature means on a Contract. No surprises. No one with 'rights' you didn't know about or didn't tell them about popping up to bring the process to a screeching halt just when their mouth was watering for your product and the money it was going to make them.
Your Registration may use Form SR, Sound Recording, and Register the actual Recording. It may Register the Lyric and the Melody to which the words are sung, as presented on paper. The electronic zap, of course, is a Sound Recording, so you'll likely be advised to employ that form. On it you will document who the author(s)/composer(s) is/are, who the Publisher is, if any. You may want to Register your Company as a Publisher, with your Secretary of State. If you put your product out where it may get airplay on terrestrial radio, you may want to Register the Title and the names of the Song-Writer(s) and Publisher with a Performance Rights Organization ( www.ascap.com )( www.bmi.com ) to enable them to collect Song-Writer and Publisher Royalties, if any are earned.
Embedding these names and addressed in the Recordings, Metadata, enables computers to do that detection.
Big Boy Pants. Responsible conduct of Commerce, Government Registration. Contracting, committing to Supply Demand with no negative surprises, for you or Contractual 'partners'. This is 'business'; not just funsies. The 'employee(s)' of the Company have to deliver, to Supply the Demanded Human Competence that actually earns the Profits.
If you've never 'studied' Commerce before, in this or any other Commercial endeavor, you may want to do so, formally with a College or University, informally with books your librarian has or can get on request. Reading Circulars on Copyright.gov is 'study', 'working' for your Company. Motive, means, opportunity. If you 'shirk' your responsibilities to Supply the Demanded Human Competence, you undermine the Company's potential for $ucce$$.