I know that "Get a Mac" seems like a trite statement to a lot of people, but in the case of professional audio and video production, there really isn't any reason to do otherwise. Your choices for professional studio compatibility are ProTools or Logic, and everything else (Abelton, etc.) is pretty much only used by hobbyists, not professional studios.
FWIW, my current home studio setup is still a Power Mac G5 Dual 2.0 GHz machine with 1 GB of RAM and a 160GB SATA-1 drive. I use a second 160GB SATA-1 drive for my recording deck. My interface is an M-Audio Delta 1010 (24-bit/96 KHz), the PCI-X version (this is the last Mac that actually works with the PCI-X card). I'm running Logic 7.2 still, because it works for what I need, which is for recording a small rock band. I have an M-Audio Octane 8-channel mic preamp fronting it, and the outtput goes through a Presonus Central Station before hitting my Sennheiser HD280 cans and M-Audio Studiophile BX8 nearfield monitors. My microphones are a pair of M-Audio Solaris large diaphragms with Shure Beta 57A and 52A dynamics. I use a LaCie Electron Blue 19 CRT monitor. All in all, a very respectable home studio setup, circa 2005, which is when I bought it.
I can easily record 16 tracks with a shit ton of software plugins including multiple convolution reverbs before running into CPU or disk speed problems. This workstation is not used for anything other than recording, and ten years later, it's perfectly functional, if limited to Mac OS X 10.6 (I keep it off the Internet, mostly). If I needed a bit more speed, I could run a RAID-0/1, add RAM, or add a tc electronic PCI DSP card to handle the reverbs and some of the other effects, rather than having the Mac calculate everything. But, the fact is, I rarely run into insurmountable problems with the amount of bandwidth in this machine. There have been times when I've needed to "freeze" certain tracks in Logic in order to avoid CPU snags, but I'm recording a four-piece rock band: drums, bass, guitars, vocals.
This whole system was literally plug and play. You are simply not going to find anything that works this simply or this well in Linux, not even now, in 2016. Eventually, this system will be replaced with something new and a Firewire or Lightning A/D/A box, and I'll upgrade to whatever version off Logic is current, but there's no need to fix what isn't broken. Logic is, to my knowledge, the only system other than ProTools that is capable of using Avid/Digidesign ProTools HD interfaces.