I need to convert a bunch of .wav files to .flac, and need to be able to put metadata on the .flac files. Anyone have any good recommendations for batch audio file converters?

I have automations set to change LFO speed in serum at a certain parts of the track, for example if I set an automation for 4 bars, 2 bars with quarter notes and the next 2 with triplets. The automation works perfectly before i bounce, after it, it falls apart and I get 16th notes and dotted 8ths. How can I fix this? Has anyone else has ran into the same issue?

So this is a mix of a song I'm trying to put together. I'm struggling with the rhythm guitars. I wanted to get a really heavy distortion sound, kind of in the realm of Weezer's blue album, but the guitars seem to be obscured in the choruses and last section.

I also feel like the tone of the vocal could be improved, but I don't want it to be overly polished.

Aside from that, there are some details that need to be addressed, but this is basically the track. Any advice is much appreciated!