If the MPC can store its music files in standard WAV data format on your G5 via USB, then all you might need to buy is a USB cable. If the MPC data format is exclusively for MPC use only, then you will only be able to use your G5 as storage bank for MPC files. Next option...burn your beats to CD on the MPC and RIP to your G5. Next option, use an audio/midi interface that can connect with your computer via USB or firewire... then stream realtime audio into Logic (not recommended). Next option, save your $2000 and just use Logic's Ultra beat to make beats. I bought a great collection of samples used by Kanye West online from Crate Kings for $35. I plan on getting Timberlands next. Ultrabeats sample browser allows me to hear a sample with a single mouse click or scroll down and drag them into the drum sequencer to build my own sample kit to record live or construct step by step. Plus, the MPC synth is dwarfed by Logics software synths. Get an Akai MPD24 USB/MIDI MPC style Pad Controller for $199 from musicians friend. Since the PAD controller only has one basic function it shoudn't take much longer to learn how to use it than an MPC would. Plus, no file transfer hassle and you can use Logic to program the PAD controller functions to match many of the functions you like about the MPC's control features. Just my opinion, though. If the MPC appeals better to your creative soul... go for it... and just keep ridin' da' beat!