Boston - nTAG, a provider of management technology for the meetings and events industry, has raised $8.4 million in its second round of venture capital, led by Pilot House and Sevin Rosen.

San Diego - Slacker, the developer of a desktop music player and Wi-Fi-enabled portable music player, has raised $40 million in its second round of funding, PEHub.com reported.

San Diego - Slacker, a digital music start-up whose products include a Web radio service and satellite- and Wi-Fi-enabled portable player, has raised $13.5 million in its first round of venture capital, from Sevin Rosen, Austin Ventures and Mission Ventures, VentureBeat reported.